You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you cancel my recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: Myself Jack Walker.

ASSISTANT: Walker, please allow me a moment.

USER: Ok.

ASSISTANT: Walker, there is no reservation with your name to cancel further.

USER: Ok, fine. Thank you for assisting me.

ASSISTANT: My pleasure, have a great day.