You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Morning.

USER: My friend booked my ticket to wrong locations, can you help me to change my existing reservation?

ASSISTANT: Sure, can I know your name?

USER: Yes, my name is Joshua Parker.

ASSISTANT: Please hold on for a moment, let me check.

USER: Ok.

ASSISTANT: I am sorry, there are no reservations with your name.

USER: That's fine, thank you.

ASSISTANT: Thank you, have a good day.