You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I abet you?

USER: I am Daniel Allen. Can you cancel my recent reservation?

ASSISTANT: Sure, I am here to aid you. Please wait for a second.

USER: Thanks. Ok.

ASSISTANT: Sorry, there is no reservation exists with your name.

USER: That's fine. Anyway, thank you for your help.

ASSISTANT: Thanks for opting us.

USER: You are welcome.