You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you help me booking a flight ticket from BOS to IAD?

ASSISTANT: Sure, I am happy to help you with that.  Can I have your travel dates please?

USER: I will start on 07/10 and return on 07/12.

ASSISTANT: Ok,  please  let me know your  preferable airlines.

USER: I am comfertable with any flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Can I have your  good name  please?

USER: I am Edward Thomas.

ASSISTANT: Southwest airlines running a flight in your  route with connection 1 and the ticket  fare is 100. Shall I proceed with booking?

USER: Please proceed with the booking.

ASSISTANT: Ok,  your  ticket booking has done and  the flight  number is 1019.

USER: Thank you.

ASSISTANT: Thank  you  for choosing us, have a  great  journey.