You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Carolyn Martinez, I would like to change my recent reservation, will you please help me with that?

ASSISTANT: Sure, may I know your name please?

USER: My self Carolyn Martinez.

ASSISTANT: Thank you for giving your details, please wait a moment.

USER: Sure, take a time.

ASSISTANT: Do you have any other travelling dates?

USER: Dates are 08/06 and 08/08.

ASSISTANT: That's fine. Sorry to say you that, there is no reservation found.

USER: Ok, it's fine. Thank you for your information.

ASSISTANT: Thank you for choosing us.