You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

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

ASSISTANT: Sure, I am glad to help you with the ticket cancellation. Can I have your name to check the reservation lsit?

USER: I am Gregory Mitchell.

ASSISTANT: Ok, please wait a minute I will get back to you with the present status.

USER: Sure.

ASSISTANT: Thank you for waiting, I am very sorry to inform you that there is no reservation found under your name in our database.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your information.