You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, What kind of help are you expecting from our side?

USER: Please help me to book a flight ticket from LAS to DTW.

ASSISTANT: Sure, Please mention your depart and arrival dates of your journey?

USER: My journey dates are from Oct, 01 to Oct, 03.

ASSISTANT: Do you need any flag stop in between journey?

USER: I need a single connecting flight.

ASSISTANT: May I know your good name please?

USER: Patrick Garcia.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I prefer to return in the morning.

ASSISTANT: Please wait for a couple of minutes, I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: Thank you for your information.

ASSISTANT: Thanks for approaching us.