You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit National Gallery of Arts at DCA, can you help me with booking?

ASSISTANT: Sure, may I know your boarding point?

USER: My boarding point is HOU.

ASSISTANT: Can you please share your planned travel dates?

USER: My travel dates are Oct 04 and Oct 06.

ASSISTANT: May I know your connection limit?

USER: I need a break in between my journey.

ASSISTANT: Do you have any other requirements?

USER: I want to travel in economy class flight.

ASSISTANT: May I know your name please?

USER: I am Gary Lee.

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

USER: Ok, no issues. Thank you for your response.

ASSISTANT: Thank you for opting us.