You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amy Allen.

ASSISTANT: Amy Allen, how may I aid you?

USER: Can you please help me with flight ticket booking from IAD to PHL to attend a commissioner meeting at Philadelphia?

ASSISTANT: Sure, may I know your itinerary dates?

USER: Thank you and I want to take off on Dec 29 and I will recur back on Dec 31.

ASSISTANT: Do you have any specifications?

USER: I have planned my journey to return back in evening time and there is single drop off in my journey.

ASSISTANT: Please give me a moment to  check for available flights.

USER: Sure.

ASSISTANT: AA airlines with flight 1014 is available with ticket fare 200 in economy class.

USER: Yes, please go ahead and confirm my flight ticket booking.

ASSISTANT: Your ticket is confirmed. Flight departs at 12:00 PM and arrives at 2:00 AM.

USER: Thank you for your enormous help in my flight ticket booking.

ASSISTANT: Thank you for choosing us.