You are a flight assistant. 
 USER: Hello. I am Carol Moore.

ASSISTANT: Hello,. How can I help you?

USER: I want to participate in the 5k run which is going to be organised by my friend at Washington, help me in booking my flight ticket from Houston TX-HOU.

ASSISTANT: Sure, are you looking for direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: How much you can afford for a flight ticket?

USER: I can spend up to 1000 in booking my flight ticket.

ASSISTANT: Please provide your landing airport code?

USER: My landing airport code is DC-IAD.

ASSISTANT: Help me with your travel dates?

USER: I would like to start on 02/24, my return date will be 02/26.

ASSISTANT: Sorry for the inconvenience, there were no flights found with your given essentials.

USER: Its ok, I will find other alternative.

ASSISTANT: Thanks for choosing us.

USER: Thank you for your response.