You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I want to book a flight ticket from SEA to ORD. Can you help me with that?

ASSISTANT: Sure, I will help you. Please provide your planned journey dates.

USER: My travel dates are 09/29 and 10/01.

ASSISTANT: Can I have your name please?

USER: I am Janet Clark.

ASSISTANT: Do you have any connection preference?

USER: I need a connecting flight.

ASSISTANT: May I know your class preference?

USER: Business class.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Janet Clark, no flights has been found on your preferences.

USER: That's ok. Thank you for your service.

ASSISTANT: Thank you for choosing us.