You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

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 glad to help you with this.

USER: Thank you.

ASSISTANT:  I need some basic information to check your ticket details, can you please tell me your full name?

USER: John Young here.

ASSISTANT: Ok, please wait a minute I will get back to you with the present status.

USER: Ok.

ASSISTANT: Thank you for waiting, I have checked in reservation list to change your ticket, but could not find any reservation with your name.

USER: No issue, Thank you .

ASSISTANT: Thank you for approaching us.