You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am William Carter. I want to meet my childhood friend in Boston MA - BOS, so please help me in booking a flight ticket.

ASSISTANT: Sure, when are you planning to travel?

USER: I want to fly on 03/27 and return on 03/29.

ASSISTANT: Please provide your origin airport code.

USER: It is a round trip.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a single connection.

ASSISTANT: AA airlines with single connection and price is 200 of 1001 flight. Shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you.