You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you please check is there any flights available between DEN and BOS for my business meeting?

ASSISTANT: Sure, can you share your journey dates?

USER: Thank you for taking my request into consideration. I would like to start my journey on May 13 and return back on May 15.

ASSISTANT: Do you have any preferences?

USER: I would like to return in morning time.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight for my journey.

ASSISTANT: May I know your name?

USER: Sure, my name is Gregory Thomas.

ASSISTANT: There is a connecting flight with number 1015 in airline Delta, the fare is 200 in economy class. Can I book it?

USER: I am ok with this flight, you can proceed with booking.

ASSISTANT: Your ticket is reserved, the depart time is 17:00 PM and return time is 4:00 AM.

USER: Thank you for your guidance.

ASSISTANT: Thank you for choosing us.

USER: Welcome.