You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to travel from DTW to LAS. Can you help me to book a flight ticket?

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

USER: I want to fly in the flight on May 04 and May 06.

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

USER: I want to have a connecting flight.

ASSISTANT: May I know your good name please?

USER: Dennis Lee.

ASSISTANT: We found Delta airline with economy class and flight number is 1004 with arrival time is 21:00 hours and depart time is 18:00 hours.Shall I proceed for booking?

USER: Proceed to booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: You are welcome.