You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly serve you?

USER: We friends were planned to change the destination of the tour to another place, so I request you to change my existing reservation.

ASSISTANT: Ok. Sure, May I know your name?

USER: Nancy Rodriguez is my name.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. No reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Thank you.