नहीं कोई गम, रेलवे से हैं हम - Aman

No More Ticket Booking Available with regard to IRCTC Reservation
#########
Literally,
Regret is a negative conscious and emotional reaction to personal past acts and behaviors. Regret is often expressed by the term "sorry." Regret is often felt when someone feels sadness, shame, embarrassment, depression, annoyance or guilt after committing an action or actions that the person later wishes that s/he...
more...

had not done or having not committed. Regret is distinct from guilt, which is a deeply emotional form of regret — one which may be difficult to comprehend in an objective or conceptual way. In this regard, the concept of regret is subordinate to guilt in terms of its emotional intensity. By comparison, shame typically refers to the social (rather than personal) aspect of guilt or (in minor context) regret as imposed by the society or culture (enforcement of ethics, morality), which has substantial bearing in matters of (personal and social) honor.
Source:Wikipedia