You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I would like to change my destination airport code in my past ticket, will you please help me with that?

ASSISTANT: Sure, I will help you. May I know your good name?

USER: Thank you for accepting my request. My name is Kathleen Thomas.

ASSISTANT: Please wait.

USER: Ok, I will wait for your reply.

ASSISTANT: There is no reservation found on your name.

USER: It's ok, not a problem with that. Thank you for your time.

ASSISTANT: Thank you for opting us.