You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me in changing my recent reservation with the name Larry Thompson?

ASSISTANT: Sure, can you let me have your name please?

USER: I am Larry Thompson.

ASSISTANT: Please spare me a moment.

USER: Sure.

ASSISTANT: Christine Green, I regret to inform that there is no reservation by your name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for reaching us.