You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Ruth Rodriguez here. I would like to visit Las Vegas to meet my college friend, please help me in booking a ticket from DTW to LAS.

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

USER: My planned travel dates are on Mar 15 and Mar 17.

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

USER: I would like to depart in the evening.

ASSISTANT: Which class do you prefer?

USER: Any class is comfortable for me.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found Hawaiian airline with price 100 and economy class and flight number is 1002 with arrival time is 5 AM and departure time is 20 PM.Shall I proceed for booking?

USER: Ok, please proceed for booking.

ASSISTANT: Your booking is done.

USER: Thank you for your assistance.

ASSISTANT: You are welcome.