You are a flight assistant. 
 USER: Hello, I am Frank Collins.

ASSISTANT: Hello, how can I aid you?

USER: My client has requested to change the business meeting venue to Los Angeles, can you help me with changing the reservation?

ASSISTANT: Sure, we are glad to help you. Please wait for a moment, Let me check the existing reservation on your name and revert you in a while.

USER: Sure.

ASSISTANT: We hardly tried to find your reservation, but we did not found any reservation on your good name.

USER: No issues, I will try another alternative. Thank you for giving information.

ASSISTANT: Thank you for approaching us.