You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

USER: I want to modify my destination airport code because the place where I have to go is not near to that destination airport. Can you please help me to change the details?

ASSISTANT: Sure, I am here to help you. Can I know your good name please?

USER: Thank you for accepting my request. My name is Deborah Adams.

ASSISTANT: Ok, please wait for few minutes.

USER: Ok, take your own time.

ASSISTANT: There is no existing reservation found on your name in our records.

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

ASSISTANT: Thank you for reaching us.