You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help that I can assist you?

USER: I want to cancel my recent reservation, due to ill health. Can you please help me?

ASSISTANT: Sure,  I am glad to help you with flight ticket cancellation. Can I know your name for checking purpose?

USER: My name is Patricia Carter.

ASSISTANT: Please allow me a moment to check it.

USER: Sure, take your own time.

ASSISTANT: Thank you for waiting, there is no reservation found for the user name in our back end to cancel your flight ticket booking.

USER: No problem, thank you for checking.

ASSISTANT: You are most welcome and thank you for reaching us.