You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know what kind of service you are expecting from us?

USER: I would like to change my previous travel dates, which is done recently. Can you pleas help me out?

ASSISTANT: Sure, we are here to help you.

USER: Thank you for considering my request.

ASSISTANT: May I know your good name please?

USER: Sure, myself Pamela Edwards.

ASSISTANT: Please stand by.

USER: Sure.

ASSISTANT: Thanks for your time, there is no active reservation found in your name to change.

USER: Not an issue with this one, anyway thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.