You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to visit Lake Travis which is in Austin, can you book a ticket for me?

ASSISTANT: May I know your airport code and travelling dates please?

USER: My travelling starts from SEA on 11/09, and return will be from AUS on 11/11. Make sure that connection limit should be 1.

ASSISTANT: May I know your name please?

USER: My name is John Green.

ASSISTANT: Green, I found a flight with your requirements in Delta airlines.

USER: Please, proceed it to me.

ASSISTANT: Thank you for providing your information, your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Your flight number is 1015. Welcome.