You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Janet Roberts. I would like to cancel my recent booking due to cancelling of our vacation trip, will you please help me?

ASSISTANT: Sure, I will help you in this. Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Roberts, there is no reservation found on your name to cancel your reservation.

USER: That's fine, no problem.

ASSISTANT: Thank you for consulting us.

USER: Thank you for your quick response in helping.

ASSISTANT: You are welcome.