You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Thomas Young.

ASSISTANT: How can I help you?

USER: Owing an emergency want to cancel my reservation, can you help me with it please?

ASSISTANT: Sure, I will help you to cancel your reservation.

USER: Thank you.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name to cancel your reservation.

USER: That's ok, thank you for the response.

ASSISTANT: Welcome, have a nice day.