You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: My name is Elizabeth Moore, can you help me to book a flight ticket from TX - AUS to LAX?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Ok, please book my ticket for the dates Feb 19th and 21st.

ASSISTANT: Do you have any preferences?

USER: Ok, please make sure to book a direct flight only.

ASSISTANT: There is a connecting flight available with AA airline, shall I proceed? Sorry, there is no direct flight available.

USER: No, please don't book the flight ticket.

ASSISTANT: Ok, thank you for reaching us.

USER: Thank you for providing the information.