You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am James Gonzalez. My meeting got postponed due to some technical problem, so can you please do some changes in my existing reservation?

ASSISTANT: Sure, please wait for a moment.

USER: ok.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: It's ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.