You are a flight assistant. 
 USER: Hello, I am Justin Robinson.

ASSISTANT: Hello, how may I help you?

USER: Due to emergency, I would like to cancel my recent reservation.

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no tickets are showing on your name.

USER: That's ok, may be it might be cancelled before.

ASSISTANT: Thank you for reaching us.

USER: Welcome.