You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

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 am here to help you.

USER: I am Kevin Hall.

ASSISTANT: May I know your name?

USER: Kevin Hall.

ASSISTANT: There is no reservation found under your name.

USER: OK, no issues. Thanks for the information.

ASSISTANT: Thank you for opting us.