You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Karen Davis.

ASSISTANT: Davis, how can I assist you?

USER: I am here looking for a direct flight from DEN to DFW, can you help me in booking the flight ticket?

ASSISTANT: Sure, can you please provide me your travel dates?

USER: Sure, my trip dates are from 09/08 till 09/10.

ASSISTANT: Ok, please wait for a while.

USER: Ok, take your own time.

ASSISTANT: Flight-1024 is available in Frontier airlines with single connection and the ticket fare is 100 only. Is that ok for you?

USER: I mentioned it above that I need direct flight.

ASSISTANT: Sorry, no direct flights available on your given travel dates.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: You are welcome and thank you for choosing us.