You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Jerry Brown.

ASSISTANT: Jerry Brown, how can I help you out?

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, I will help you.

USER: Thank you.

ASSISTANT: Thanks for your time.

USER: Ok,.

ASSISTANT: No reservation was found on your name to change.

USER: Ok, thank you for information.

ASSISTANT: Thank you for connecting us.