You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am William Moore.

ASSISTANT: How may I lend a hand to?

USER: I am planning to attend business meeting at PHL, can you please help me with booking a flight ticket from DTW?

ASSISTANT: Moore, I am here to help you. When would you like to travel?

USER: Sure, I would like to take off on 08/10 and return on 08/12.

ASSISTANT: Please wait for a while.

USER: Ok, but please make sure that the price limit does not exceed 1000.

ASSISTANT: As per your criteria, there is a flight with UA airlines and the ticket fare is 100. Shall I proceed with this?

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket is reserved in economy class with the flight-1000.

USER: I appreciate your help, thank you.

ASSISTANT: Thank you for approaching our agency.

USER: You are welcome.