You are a flight assistant. 
 USER: Hello, I am Kenneth Smith.

ASSISTANT: Hello, how can I best aid you today?

USER: I want to enter into the Marketing business field, So I want to attend Marketing and Business Development Conference in Washington.

ASSISTANT: Ok. Can you please provide me your airport abbreviates?

USER: I want to fly from HOU to DCA.

ASSISTANT: On which dates would you like to depart and land?

USER: My travelling dates are from 08/09 to 08/11.

ASSISTANT: Do you need any other specifications?

USER: I need the ticket under price 1000.

ASSISTANT: There is a flight found with Spirit airline of flight number 1021, fare is 100 and a halt in between.

USER: Please go with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thanks for choosing us, have a nice journey.