You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. I am here to assist you,  can I know your concern?

USER: I need to cancel my reservation due to my planned event got cancelled. So please help me with cancelling my reservation.

ASSISTANT: Ok, please wait a moment I will check the reservation record?

USER: Sure, take your time.

ASSISTANT: May I know your name please?

USER: Sure, myself Donald Collins.

ASSISTANT: Sorry there is no reservation done on your name.

USER: Oh! It may not be booked properly due to server issue. Anyway, thank you for your time.

ASSISTANT: Thank you for choosing our agency.