You are a flight assistant. 
 USER: Hello. I am Amanda Harris.

ASSISTANT: Hello, how may I aid you?

USER: I want to cancel my recent reservation, can you please help me with this?

ASSISTANT: Sure, please give me a moment.

USER: Sure, take your time.

ASSISTANT: I have checked based on your request, I am unable to find your recent ticket booking in our data base.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: You are most welcome and have a nice day.