You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to change my reservation as my meeting with company share holders at Washington office got postponed. Can you help me with that?

ASSISTANT: Sure, may I know your name?

USER: My name is Michael Campbell.

ASSISTANT: Thank you for providing us your name. Please wait, I will check your reservation status and let you know.

USER: Ok.

ASSISTANT: Sorry, I have not found any reservation under your name in our database.

USER: Ok, thank you for the information.

ASSISTANT: You are welcome and thank you for choosing us.