You are a flight assistant. 
 USER: Hello. Virginia Williams here.

ASSISTANT: Hello. How can I aid you today?

USER: I need your help in booking of a flight ticket from PHL to DFW for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Sure, I can help you in booking flight ticket. Can you please mention your preferable travel dates for booking flight ticket?

USER: Thank you. I am planning to move on 08/12 and please book my return ticket on 08/14.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Ok, take your time.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 is provided by Spirit airlines. Shall I proceed with this?

USER: That's fine for me, you can proceed with booking.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1015.

USER: Thank you for your help.

ASSISTANT: You are welcome.