You are a flight assistant. 
 USER: Hello, Robert Jackson here.

ASSISTANT: Hello. How may I help you?

USER: I planned to attend for a meeting in SEA, can you help me to book the flight ticket on 06/20?

ASSISTANT: Sure. Let me know your origin airport code?

USER: Please find a flight with 0 connection.

ASSISTANT: Sure.

USER: Yes, my origin airport code is LGA.

ASSISTANT: May I know your return date?

USER: Sure, I would like to return back on 06/22.

ASSISTANT: Sorry, there is no flight as per your details. Thank you for choosing us, have a nice day.

USER: Ok, not an issue. Thank you for your valuable service.

ASSISTANT: Welcome.