You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be helpful hand to you?

USER: Can you change my reservation? because my part time job is completed here.

ASSISTANT: May I know your name?

USER: So, I would like to change my place. And I am Joshua Perez.

ASSISTANT: Sure, give me a minute.

USER: Sure, take time.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: I didn't found any reservation matching your name.

USER: Fine.

ASSISTANT: Thank you for reaching us for changing.

USER: Thanks for your best service.

ASSISTANT: Have a safe day.