You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,how may I assist you?

USER: As my tournament got postponed, I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure,may I know your name please?

USER: Sure, my name is Margaret Thomas.

ASSISTANT: Please wait for a while, I will check and revert you.

USER: Ok.

ASSISTANT: Than you for waiting. Sorry we did not found any reservation on your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us,have a nice day.