You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I'm Christine Martin. I am planning to attend music concert at DCA, can you please help me with booking a flight ticket from ORD?

ASSISTANT: Can I know your travel dates?

USER: Sure, I would like to take off on 12/23 and return back on 12/25.

ASSISTANT: I found a flight with 2 connections.

USER: I need a flight with 1 connection.

ASSISTANT: Sorry, there is no flight is available on your request.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: You are welcome.