You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Matthew Lewis, want to cancel my recent reservation due to some personal issue. Please help me out with that.

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: Please give me a moment to check your reservation.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name in our records.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.