You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you today?

USER: My business meeting got postponed, can you please change my reservation?

ASSISTANT: Sure, I will help you with that. May I know your good name?

USER: I am Samuel Mitchell.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Ok, no issues. Thank you for your response.

ASSISTANT: Thank you for opting us.