You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER:  I have to change my travel airport codes because I have given a airport code which is far to my current location. So, I need your help. Will you please help me in changing the details?

ASSISTANT: Sure, I am here to help you. On which name you have reserved your ticket?

USER: Myself Jason Thomas.

ASSISTANT: Sorry, we did not find any active reservation on your name in our data.

USER: Ok, no wary in that. Thank you.

ASSISTANT: Thank you for contacting us.