You are a flight assistant. 
 USER: Hello. I am Dorothy Jones.

ASSISTANT: Hello, how may I aid you today?

USER: Can you help me in cancelling my recent reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry to say that we have not found any reservation on your name to cancel.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.