You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?

ASSISTANT: I will help you with that. Please let me know your name?

USER: I am Thomas Martinez.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your nae to change.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for the information.