You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Patricia Smith here. I want to cancel my reservation due to family issues.

ASSISTANT: Sure, I can help you with the ticket cancellation process.

USER: Ok.

ASSISTANT: Please wait a minute while I am checking your ticket status.

USER: Sure.

ASSISTANT: Sorry to say that, there is no reservation found with your name in our database to cancel.

USER: It's ok, thank you.

ASSISTANT: You are most welcome. Thank you for choosing us. Have a nice day.