You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Dennis Johnson, can you help me search a flight from HOU?

ASSISTANT: Ok, may I know your price limit of your journey?

USER: My price limit for this trip is 500.

ASSISTANT: May I know your travel dates?

USER: My travelling dates are 07/11 and 07/13.

ASSISTANT: Please provide me your destination code?

USER: My preferred destination airport code is DCA.

ASSISTANT: Johnson, I found a flight with 1 connection limit and 1004 flight number.

USER: Please go ahead with booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you.

ASSISTANT: Most welcome.