You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my reservation which is done recently due to some problem, can you please help me?

ASSISTANT: Sure, I will help you. May I know your name please to check your reservation status?

USER: Sure, my name is Thomas Taylor.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thomas, no reservation has been found on your name in our database.

USER: Ok, that's fine. Thank you for your service.

ASSISTANT: Thank you for choosing us.