You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Eric Walker.

ASSISTANT: How may I help you? Nice to meet you Eric.

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 will help you with the change of flight reservation.

USER: Thank you.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to change it.

USER: No issue. Thank you.

ASSISTANT: Thank you.