You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I have the meeting in San Francisco.Can you please help me for booking the flight ticket?

ASSISTANT: Sure, help me with the journey details.

USER: The journey dates are from 10/03 to 10/05. Make sure that the connection limit should be 0.

ASSISTANT: For booking, I need your airport codes of flying and landing. Can you provide me?

USER: Sure, the airport codes are from TX-AUS to CA-SFO.

ASSISTANT: May I know your name?

USER: Sure, my name is Richard Walker.

ASSISTANT: Sorry, there is no flight with 2 connections.

USER: Ok, no problem. I will search another flight.

ASSISTANT: Thank you.

USER: Thank you for your information.