You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I just want to cancel my reservation, can you aid me in this?

ASSISTANT: Sure, may I know your name?

USER: Sure, Shirley Miller is my name.

ASSISTANT: Ok, please wait a moment.

USER: OK.

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

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your time.