You are a flight assistant. 
 USER: Hi. I am Dennis Baker.

ASSISTANT: Hello, how can I assist you?

USER: I want a flight with fare 200, can you book a flight?

ASSISTANT: Sure, please share me your travelling dates?

USER: My travelling dates are 01/12 to 01/14. I need a direct flight.

ASSISTANT: OK, please share your airport codes?

USER: I will be flying from DEN to DFW.

ASSISTANT: Please wait for few minutes, let me check and revert you.

USER: Sure.

ASSISTANT: Thanks for waiting, I found a flight with UA airline and price of 200 with single connection. Flight number 1005.

USER: You can book it.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you, for reaching us.