You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: I had done my flight ticket booking last Friday but now I want to cancel my flight ticket. Can you help me out of it?

ASSISTANT: Ok, please provide me some information for cancelling.

USER: I am Linda Davis.

ASSISTANT: Linda, I didn't find any booking on your name to cancel.

USER: Ok, thank you for the information.

ASSISTANT: Thanks for reaching us.