You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to change my reservation due to postponed of my Cricket match, so please help me to change my reservation to other dates.

ASSISTANT: Sure, I am here to aid you.

USER: Thank you for considering my request.

ASSISTANT: Ok, please mention your name.

USER: Sure, my name is Jonathan Smith from Denver.

ASSISTANT: Ok, please give me a minute, I will check the status and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting, we did not find any reservation on your name to change it.

USER: Not a problem, thank you.

ASSISTANT: Thank you for reaching us.