You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra Smith from Austin.

ASSISTANT: How can I assist you?

USER: Can you please book a flight ticket from AUS to IAH?

ASSISTANT: Ok, may I know your travel dates to check for the flights availability?

USER: Thank you for your positive response, I want to take off on 12/18 and please confirm my return ticket also on 12/20.

ASSISTANT: There is a connecting flight available for the price limit 100. Can I book?

USER: Please proceed.

ASSISTANT: Ok, the flight 1000 is booked and the airlines is Southwest.

USER: Thank you for your help.

ASSISTANT: Thank you for connecting with our agency.