You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Owing an emergency, I want to cancel my reservation. Can you help me out?

ASSISTANT: Sure, I will help you in cancelling your reservation.

USER: Thank you.

ASSISTANT: To cancel your reservation, can I have your name?

USER: Myself Laura Johnson.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry Johnson, I didn't find any reservation to cancel your reservation.

USER: That's not a problem. Thank you for checking.

ASSISTANT: Thank you for opting us.

USER: Welcome.