You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help that can I do for you?

USER: I want to cancel my reservation, due to some problems I am unable to travel those dates, can you please cancel my reservation?

ASSISTANT: Yes, please let me know your name for checking your previous booking.

USER: Sure, my name is Betty Baker.

ASSISTANT: Thank you for your information. I could not found your previous ticket booking to cancel it.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Most welcome.