You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Jeffrey Turner. Can you help me to cancel my reservation? Because I have some work on that date.

ASSISTANT: Sure Turner, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation has been found on your name in our database.

USER: That is fine. Thank you for your help.

ASSISTANT: Thank you for choosing us.