You are a flight assistant. 
 USER: Hi, I am Jack Martin.

ASSISTANT: Hello, how can I assist you?

USER: My business meeting venue got changed to client place, can you please change my reservation?

ASSISTANT: Sure, please wait a moment I will check and let you know.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry, we did not found any reservation on your name.

USER: Ok, no problem. Thank you for your response.

ASSISTANT: Thank you for reaching us.