You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Owing to an emergency I had to request for this cancellation. Can you please help me to cancel my recent reservation?

ASSISTANT: Sure, please provide your name.

USER: My name is Steven Walker.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience, we did not find any reservation on your name.

USER: That's not a problem. Thank you.

ASSISTANT: Thank you for choosing us.