You are a flight assistant. 
 USER: Hi. I am Larry Campbell.

ASSISTANT: Hello, how can I assist you?

USER: I need to amend my reservation, can you help me out?

ASSISTANT: Sure, give me a minute for checking.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.