You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you today?

USER: I need to book a flight ticket from Chicago, IL - ORD to attend a wedding at San Francisco, CA - SFO. Can you help me with the booking?

ASSISTANT: Sure, please specify your travel dates?

USER: They are planned to be on 11/02 and 11/04.

ASSISTANT: Do you need any other specifications?

USER: I need a connecting flight.

ASSISTANT: We found a Southwest airline, flight 1002 with fare 100.

USER: Book my ticket.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for the service.

ASSISTANT: Thank you for choosing us.