You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Please help me in booking a flight ticket to ORD from SFO in December month.

ASSISTANT: Sure, can I know the travel dates please?

USER: Sure, my trip dates are Dec 19 and Dec 21.

ASSISTANT: Do you have any requirements?

USER: I need single connecting flight for my journey.

ASSISTANT: May I know your name please?

USER: I am Frank Thompson.

ASSISTANT: There is a connecting flight in Frontier airline, can I book it?

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket has been booked with flight number 1027.

USER: Thank you for your kind service.

ASSISTANT: Thank you for approaching us.