You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Can you cancel my recent reservation?

ASSISTANT: Sure, may I know your name?

USER: Ok, my name is Nicholas Anderson.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your own time.

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

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for choosing us.