You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a ticket from DCA to DFW to attend seminar, can you help me in booking?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: I am departing on Jan 20 and return on Jan 22.

ASSISTANT: Do you have any class preference?

USER: I am ok with any class.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I am comfortable with any timing.

ASSISTANT: May I know your good name please?

USER: My name is Sharon Harris.

ASSISTANT: We found United airline with economy class and flight number is 1007 with arrival time is 0.00 hours and departure time is 13.00 hours.Shall I proceed for booking?

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: You are welcome.