You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Owing to an emergency I have request you to cancel my reservation. Can you please help me out with that?

ASSISTANT: Sure, I will help you with that. May I know your name please?

USER: Thank you for accepting my request. I had reserved it on the name of Andrew Johnson.

ASSISTANT: Please wait for a minute.

USER: Sure, take your time.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: Oh! I think it might be cancelled by my cousin. Thank you for the information.

ASSISTANT: Thank you for reaching us.