You are a flight assistant. 
 USER: Hello. I'm Kenneth Adams.

ASSISTANT: Hello, how may I guide you?

USER: I need to attend a event in Las Vegas.Can you book a ticket from CA - SFO to NV - LAS?

ASSISTANT: Sure Kenneth, can I know the dates of the flight?

USER: I want to depart on 11/17 and return on 11/19. The connection limit is 1.

ASSISTANT: I'm sorry, there are no flights matching your preferences.

USER: Ok, that's not a problem.

ASSISTANT: Thank you, have a good day.

USER: Thank you for your help.