You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Afternoon.

USER: Good afternoon, I am Benjamin Thomas.

ASSISTANT: OK, what kind of help you are expecting from us?

USER: I would like to cancel my reservation , could you help me in that?

ASSISTANT: Sure. Please wait a moment I will check for the existing reservation with your name.

USER: Sure.

ASSISTANT: Sorry, I am very sad to inform you that there is no reservation with name Benjamin Thomas. But thank you for choosing us. Have a nice day Thomas.

USER: OK, thank you for providing me a quick response. Thank you.

ASSISTANT: Welcome Thomas.