You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I want to do some changes in my existing reservation. Can you please help me with it?

ASSISTANT: Sure, may I know your name to check the list and revert you?

USER: Jessica Jackson here.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: We found a reservation on your name. Can you share your updated trip dates?

USER: My trip dates will be on July 8 to July 10.

ASSISTANT: Please provide me your airport codes as well.

USER: I want to start from PHX and return from IAD.

ASSISTANT: Do you have any specifications to be met?

USER: Yes, I want to travel in a connecting flight.

ASSISTANT: Ok, let me check the availability.

USER: Sure.

ASSISTANT: Ok, there is an United airline with flight number 1013 going on your way with 1 connection and the ticket cost is 100. Is that fine?

USER: Ok, you can proceed to booking.

ASSISTANT: Your request for changing reservation has been processed successfully.

USER: Thank you for your help.