You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Joseph Carter here. I want to book a flight ticket from IAD to LGA. Can you help me in that?

ASSISTANT: Sure, can you please provide me with your dates of journey?

USER: My trip dates are Dec 9 to Dec 11.

ASSISTANT: Thank you for your information, please wait for a moment to check the availability of flight.

USER: Ok.

ASSISTANT: I found a flight with the connecting flight of fare 100 and the airline is Frontier, shall I book this ticket?

USER: You can proceed.

ASSISTANT: Ok, the flight with the number 1007 has been reserved.

USER: Thank you for booking.

ASSISTANT: You are welcome, have a great day.