You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Charles Adams.

ASSISTANT: How shall I assist you?

USER: I have to attend an interview at Denver, can you book a ticket for me?

ASSISTANT: Sure. Please provide departure and return dates?

USER: My preferable journey dates are, 07/31 and 08/02.

ASSISTANT: May I know travelling codes?

USER: Journey points are, IAH and DEN.

ASSISTANT: There is flight available with airline Spirit, price 100.

USER: May I know the connection limit?

ASSISTANT: Connection limit 2.

USER: I need one connection only, please don't book this ticket.

ASSISTANT: There is flight with connection 1.

USER: Ok, confirm it.

ASSISTANT: Airline AA, flight number 1015.

USER: Ok.

ASSISTANT: Connection 1 with price 200. Shall I book a ticket?

USER: Yes, please.

ASSISTANT: Ticket is booked.

USER: Thanks for your service.

ASSISTANT: Thanks.