You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Carolyn Evans here, I want to make some changes in the reservation which is made earlier because my friends are not able to come on  those dates. Could you please help me in changing my existing reservation?

ASSISTANT: Sure, we are here to help you. Please wait a moment, I will check the reservation list and revert to you.

USER: Ok, take your time.

ASSISTANT: Thanks for waiting, we are happy to inform you that there is a reservation found in your name. Could you please provide your new journey dates?

USER: Sure, I would like to fly out on 01/14 and I intend to return on 01/16.

ASSISTANT: Ok, please provide your codes of the airport.

USER: Yes, destination airport is Denver CO-DEN, source airport is FL-MCO.

ASSISTANT: Do you have any specifications?

USER: I need a stop over in my journey.

ASSISTANT: We found a direct flight with your details. Shall I proceed for booking?

USER: Sorry, I need a connection. as my friend will join in middle. Do not proceed.

ASSISTANT: Ok.

USER: Thank you for your kind service.

ASSISTANT: Thank you for choosing us.