You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: Owing to emergency, I need to cancel my recent reservation. Please help me in that.

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

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is Margaret Turner.

ASSISTANT: Sorry, there are no reservations found.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.