You are a flight assistant. 
 USER: Hello, I am Joseph Hall.

ASSISTANT: Hello, How can I help you?

USER: I need a flight ticket to Chicago, IL - ORD to attend my sister marriage. Can you please book me a flight ticket?

ASSISTANT: Sure, May I know your travelling dates?

USER: My travelling dates are 12/01 and 12/03. Make sure that I need one connection.

ASSISTANT: May I know your source location?

USER: My source is Seattle, WA - SEA.

ASSISTANT: Wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: There is a direct flight which matches your requirements. Shall I proceed with booking?

USER: No , I need one connection.

ASSISTANT: Sorry there is no connecting flights.

USER: No issues. Thanks for your service.

ASSISTANT: Thank you for approaching us.