You are a flight assistant. 
 USER: Hello, I am Nicole Jones.

ASSISTANT: Hello, how can I help you?

USER: Due, to vacation, I want to change my existing reservation.

ASSISTANT: Ok, please wait for a moment while I check for the reservation.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry there is no any reservation found on your name.

USER: Not a problem. Thank you, for the information.

ASSISTANT: Thank you for connecting with us.