You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to visit Oakland, could you please book my flight ticket from DEN to OAK?

ASSISTANT: May I know your desired travel dates please?

USER: I want to depart on Sept 10th and return back on Sept 12th.

ASSISTANT: Do you have any specifications?

USER: I only prefer for a connecting flight.

ASSISTANT: May I know your name please?

USER: Myself Samantha Johnson.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Yes, please book the ticket.

ASSISTANT: Your ticket is booked, flight number 1028 with UA airlines.

USER: Thank you so much.

ASSISTANT: Thank you for opting us.