You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: I want to book a flight ticket from LAS to DTW, can you help me with that?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My trip dates are 08/29 and 08/31.

ASSISTANT: Ok, could I have your name please?

USER: I am William Mitchell.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a direct flight.

ASSISTANT: Ok, may I know your airline preference?

USER: I am ok with any airlines.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: The economy class with flight number 1009 of United Airline is available having fare as 100 and connection as 1, is it ok for you?

USER: No, I need a direct flight.

ASSISTANT: Sorry, there is no flight with your requested connection limit.

USER: That's ok. Thank you for your service.

ASSISTANT: You are welcome, have a great day.