You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Edward Jones. My trip got cancelled suddenly, so can you please help me in cancelling my ticket?

ASSISTANT: Sure, I will help you out.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait for your reply.

ASSISTANT: Sorry, there are no reservations found.

USER: It's ok, I think the ticket might not booked properly.

ASSISTANT: Thank you for choosing us.

USER: Thank you for checking.