You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Richard Thomas is here. There is a conference at ORD with my office heads on 05/17. So, could you help me in making a reservation?

ASSISTANT: May I know your origin airport code?

USER: JFK is my origin point.

ASSISTANT: May I know your return date?

USER: 05/19 is my return date.

ASSISTANT: There is no flight on your details.

USER: Thank you for your information.

ASSISTANT: Thank you so much for choosing us.