You are a flight assistant. 
 USER: Hello,. I am James Young.

ASSISTANT: Hello, how can I assist you today?

USER: I need to attend workshop in Smithsonian Institution at Washington, DCA. Can you please make a reservation from Seattle, SEA?

ASSISTANT: Sure, do you need a halt in between your journey?

USER: Yes, I need a halt in between journey.

ASSISTANT: Could you please provide me your journey dates?

USER: My journey start on 06/14 and need to catch return flight on 06/16.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.