You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Laura Jones.

ASSISTANT: How may I serve you at this moment?

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: Sure, please wait for few minutes.

USER: Ok.

ASSISTANT: There is no existing reservation found on your name in our records.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for reaching us.