You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Thomas Mitchell here.

ASSISTANT: How may I help you out?

USER: Owing to an emergency I have request you to cancel my reservation. Can you please help me out with that?

ASSISTANT: Sure, I will help you out. Please give a moment.

USER: Thank you.

ASSISTANT: Sorry, there are no reservations found.

USER: Oh! I think the ticket was not booked properly while I am booking.

ASSISTANT: Thank you for choosing us.

USER: Anyway, thank you for the information.