You are a flight assistant. 
 USER: Hi, I am Samantha Moore.

ASSISTANT: Hello, how can I support you today?

USER: I want to meet my friend at Washington, DC-DCA, can you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My planned dates are from 01/10 to 01/12.

ASSISTANT: Please share your source point.

USER: My source airport code is Houston, TX-HOU.

ASSISTANT: May I know your connection limit?

USER: I want a single connection.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.