You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Stephen Mitchell here.

ASSISTANT: How can I help you?

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

ASSISTANT: Please wait a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, no reservation found by your name.

USER: Oh! I think the ticket was not booked properly while I am booking. Anyway, thank you for the information.

ASSISTANT: Thanks.