You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Please book a flight ticket from SEA to ORD?

ASSISTANT: May I know your journey dates?

USER: My journey dates are May 03 and May 05.

ASSISTANT: Is there any connection limit?

USER: I need a connecting flight.

ASSISTANT: Any more preferences?

USER: No.

ASSISTANT: Can I have your name?

USER: I am Steven Collins.

ASSISTANT: Sorry, there were no flights found with your required dates to travel.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us.