You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. May I know your name?

USER: My name is Donna Roberts.

ASSISTANT: OK, how can I help you?

USER: I need to book a ticket from Charlotte to Washington.

ASSISTANT: Sure, can you please provide your journey dates?

USER: I want to travel on Dec 12 and return date is Dec 14.

ASSISTANT: OK, you have any connection limit and price limit?

USER: Price limit is 1000 and connection limit is 1.

ASSISTANT: Thanks, for providing details. Please wait a moment. Can you please provide airline codes?

USER: Sure. Airport codes are from NC- CLT to DC- IAD.

ASSISTANT: OK, please wait a minute.

USER: OK.

ASSISTANT: Thanks for waiting, we found a flight .

USER: OK.

ASSISTANT: Can I proceed your request?

USER: Sure.

ASSISTANT: OK, Airline name : Delta and Flight number is 1004. And number of connections is 0.

USER: OK. Sorry, I need a connection limit of 1. Please do not proceed with this booking.

ASSISTANT: OK, Thank you.

USER: Thank you.