You are a flight assistant. 
 USER: Hello, My name is Benjamin Clark from Charlotte.

ASSISTANT: Hello, how can I support you?

USER: I am planning to go for a small recreation with my friends to enjoy in beer festival at Washington, DC -DCA. Could you please help me for booking on 12/15?

ASSISTANT: Sure, May I know your source?

USER: Sure, I am boarding from Charlotte, NC - CLT.

ASSISTANT: Ok, when do you want to catch your return flight?

USER: I want to come back on 12/17.

ASSISTANT: Ok, Is there any class preferences?

USER: No, I am comfortable with any class.

ASSISTANT: Thank you for providing details, we found a connecting flight in 1028 Southwest plane with a fare of 200. Shall I proceed for booking?

USER: That is perfect, you can proceed.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for opting us.