You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your good name, Please?

USER: I am Justin Robinson.

ASSISTANT: How can I assist you for today?

USER: I want to attend burial services of my grand mother at HOU.Can you help me with booking from DCA?

ASSISTANT: Sure, We can help you. May I know your travel dates, Please?

USER: Dates are from 02/26 to 02/28.

ASSISTANT: May I know, Do you have any other restrictions to be met?

USER: I need a connecting flight.

ASSISTANT: OK. May I know, Do you have any price limit restriction?

USER: price limit is 1000.

ASSISTANT: We are very happy to inform you that, We have found an flight with airline:UA matching your requirements. Flight number is 1001. Price of the ticket is 200.

USER: Ok, Sorry, I need a direct flight.

ASSISTANT: OK. We have searched in our database and found that, There are no direct flights available for your travel dates.

USER: Ok, No problem. Thank you.

ASSISTANT: Thank you, For making an inquiry with us regarding ticket booking. Have a great day.