You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Patricia Davis. Can you help me in cancelling my recent reservation?

ASSISTANT: Sure, I will help you out. Please wait for a while. I will check in our database.

USER: Sure.

ASSISTANT: Sorry, there are no reservations found.

USER: No issue, thank you.

ASSISTANT: Thank you for choosing us.