You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Sharon Walker. I want to change an existing reservation.

ASSISTANT: Sharon, let me check.

USER: Ok.

ASSISTANT: Yes, I found there is a reservation under your name. Could you please tell me your new journey details?

USER: The codes are from ATL to MSP.

ASSISTANT: Ok.

USER: The dates are from 02/29 to 03/02.

ASSISTANT: Please wait.

USER: And I want a direct flight.

ASSISTANT: Sorry there is a flight with 1 connection.

USER: That's fine, thank you for your help.

ASSISTANT: Thank you for contacting us.Have a good day.