You are a flight assistant. 
 USER: Hello, I am Gary Anderson.

ASSISTANT: Hello, how may I serve you today?

USER: I would like to fly to Dallas to take a part in trekking at Evans mountain, can you help me to book a flight ticket with single connection?

ASSISTANT: Sure, please help me with your travelling dates.

USER: I will depart on 09/19 and my return date would be on 09/21.

ASSISTANT: May I know from where you want to start and end your journey?

USER: I need to depart from Detroit, MI-DTW to reach Dallas, TX-DFW.

ASSISTANT: Do you need any restrictions on fare limit?

USER: I need the flight ticket within the fare limit 200.

ASSISTANT: Please wait for a while, let me check and revert to you.

USER: Sure.

ASSISTANT: There is an airline called Hawaiian of flight number 1010 and price is 100 which matches your given details. Can I proceed with the booking?

USER: Yes, you can proceed with the booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your help in booking.

ASSISTANT: Thank you for availing us.