You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Please help me to book a flight ticket from SEA to BOS.

ASSISTANT: Sure, let me know your travel dates please?

USER: I want to take off on 19 Apr and return on 21 Apr.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you need any other preference?

USER: I prefer to travel in economy class.

ASSISTANT: Can I know your name please?

USER: I am Jerry Brown.

ASSISTANT: American Airlines is providing connecting flight with the ticket fare of 100 and depart time is 14:00 hours, arrival time is 15:00 hours. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed by flight number 1003 and an economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.