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 OAK to PHL?

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

USER: I want to fly on Sept 21 and return on Sept 23.

ASSISTANT: May I know your connection limit?

USER: I need a single connection.

ASSISTANT: Ok, is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you need any airline preference?

USER: No, I don't have any other specifications.

ASSISTANT: Do you have any specific depart and arrival timings?

USER: No.

ASSISTANT: Can I know your name please?

USER: Myself Jeffrey Collins.

ASSISTANT: Frontier Airlines is providing connecting flight with the ticket fare of 200 and depart time is 20:00 hours, arrival time is 5:00 hours. Shall I proceed?

USER: You can proceed to booking.

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

USER: Thank you.

ASSISTANT: Thanks for choosing us.