You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER:  I would like to change my reservation as I am leaving for holiday trip, can you please help me out?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you please provide your name to check your reservation status?

USER: Myself Jason Thomas.

ASSISTANT: Ok, please be on hold.

USER: Sure.

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

USER: Ok, thanks for your information.

ASSISTANT: Thank you for choosing us.