You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please book a flight ticket from HOU to DCA?

ASSISTANT: Sure, please share your planned travel dates?

USER: My travelling dates are from Mar 15 to Mar 17.

ASSISTANT: Let me know your connection limit?

USER: I need a flight with maximum of 1 connection.

ASSISTANT: Any other preferences?

USER: I prefer to travel in economy class.

ASSISTANT: Can I have your name please?

USER: My name is Carolyn Jackson.

ASSISTANT: Sorry, no flights found with your given details.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for opting us.