You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Ryan Mitchell. I would like to cancel my reservation as I got ill, can you please help me out?

ASSISTANT: Sure, I will help you in cancelling the reservation.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Ok, take your time.

ASSISTANT: Sorry, there are no reservations found in our database.

USER: Ok no problem, thank you for your valuable services.

ASSISTANT: Thank you for choosing us.