You are a flight assistant. 
 USER: Hello, I am Timothy Martin.

ASSISTANT: Hello, How may I be of your help?

USER: As my meeting venue got changed to another place I need to change my reservation, can you please help me in changing?

ASSISTANT: Sure, I am here to help you. Please hold on for a minute.

USER: Sure.

ASSISTANT: Thanks for being patience. Sorry to inform you that, we do not found any reservation in your name.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for contacting us, have a great day.