You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I want to cancel my reservation, because my friends have already done my reservation with some other airlines.

ASSISTANT: Sure, may I know your name?

USER: Sure, you can check the reservation on the name of Jonathan Allen.

ASSISTANT: Sorry Jonathan Allen, no reservation found on your name.

USER: Ok, Thank you for your kind information.

ASSISTANT: Thank you  for approaching us.