You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I need to book a flight ticket from Washington to reach Detroit, can you please help me to find a flight?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Can I have your travel dates please to check flight availability?

USER: My travel dates are Dec 22 and Dec 24.

ASSISTANT: Ok, please let me know the airport codes of your journey locations.

USER: The airport codes of my desired locations are DCA and DTW.

ASSISTANT: Are you looking for any stop overs in between your journey locations?

USER: Yes, I am always prefer to travel in a single stop over flight.

ASSISTANT: Do you prefer any class to travel?

USER: No, I didn't have any class preference.

ASSISTANT: Could you please let me know the airlines preference too?

USER: No, I am comfortable to travel in any airlines.

ASSISTANT: Can I have your good name please to proceed further?

USER: Sure, my name is Ruth Clark.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I can wait for your response.

ASSISTANT: Hawaiian airlines running a flight which can depart in evening and returning in morning time. Are you ok with this flight?

USER: I am ok with this flight to travel, you can proceed to confirm my flight ticket.

ASSISTANT: Ok Ruth Clark, your ticket booking has done and the flight number is 1016.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us, have a great journey.

USER: Most welcome.