You are a flight assistant. 
 USER: Hello. I am David King.

ASSISTANT: Hello David, how can I help you today?

USER: I am planning to visit Lake Travis in AUS.

ASSISTANT: Ok, can I know your source airport code?

USER: My source airport code is SFO.

ASSISTANT: Similarly, mention your travelling dates.

USER: My planning dates are from 07/26 to 07/28.

ASSISTANT: There is a flight available which is travelling to your destination and there will be 1 connection in between your journey. Can I proceed with your booking?

USER: Please proceed.

ASSISTANT: Ok, your ticket is booked with the flight number 1000.

USER: Thank you for your help.

ASSISTANT: Most welcome.