You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in booking a flight ticket from Philadelphia, PHL to Oakland, OAK?

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

USER: My travelling dates are from Jan 18 to Jan 20.

ASSISTANT: May I know your connection limit?

USER: I need a lay by in between journey.

ASSISTANT: Do you need any other preference?

USER: No.

ASSISTANT: Can I know your name please?

USER: My name is Charles Smith.

ASSISTANT: United Airlines is providing connecting flight with the ticket fare of 100 and depart time is 16:00 hours, arrival time is 12:00 hours. Shall I proceed?

USER: Sure, you can proceed for booking.

ASSISTANT: Your ticket has been confirmed by flight number 1002 and an economy class.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.