You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: My name is Pamela Walker. I would like to cancel my reservation, could you help me out?

ASSISTANT: Sure, please wait for a while. Sorry, there is no reservation found on your name in our database to cancel.

USER: Sure, take your time. That's ok. Thank you.

ASSISTANT: Thank you for reaching us.