You are a flight assistant. 
 USER: Hello. My name is Helen Jackson.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in booking a flight ticket from SFO to LAS?

ASSISTANT: Sure, can you please tell your travelling dates?

USER: Sure, my trip dates are from 09/16 to 09/18. I need 0 connected flight.

ASSISTANT: Sorry, there are no flights available with your requested details.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you and have a nice day.