You are a flight assistant. 
 USER: Hello. I am Virginia Harris.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me in booking a flight ticket from CA - SFO to TX - AUS?

ASSISTANT: Sure, we are here to help you. On which dates would you like me to book your ticket?

USER: I would like to fly on 01/20 and return on 01/22.

ASSISTANT: Do you have any requirements to be met?

USER: Yes, I need a direct flight.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.