You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, thanks for connecting with us. How can I help you?

USER: Actually my pod lead planned one meeting but he postponed so that I want to change an existing reservation, can you help me?

ASSISTANT: Sure, I'll be glad to help you. Can I have your name to check your reservation details please?

USER: Sure, I am Kenneth Martinez here.

ASSISTANT: Have you done the reservation with your name?

USER: Yes, it's on my name.

ASSISTANT: Then sorry, we could not find any reservation on your name.

USER: Ok, no problem.

ASSISTANT: Do you want any other information please?

USER: No, thank you for your information.

ASSISTANT: Thank you and have a nice day.