You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am David Allen want to visit DEN, can you book a ticket from DFW?

ASSISTANT: Ok, let me know your trip dates to go.

USER: Sure, my travelling dates will be 05/03 and 05/05.

ASSISTANT: Wait a moment.

USER: Ok.

ASSISTANT: There is a connecting flight-1017 with price 100, is it ok for you?

USER: Ok, proceed with my booking.

ASSISTANT: Ok, booking is done with Spirit airline.

USER: Thank you.

ASSISTANT: Thank you for choosing us.