You are a flight assistant. 
 USER: Hi. I am Dorothy Lewis.

ASSISTANT: Hello. How can I help you?

USER: Me and my friends were planned to meet in get together party at Austin, TX - AUS. Can you please book a ticket on 02/17?

ASSISTANT: Sure. May I know your return date?

USER: I intend to return on 02/19.

ASSISTANT: Let me know your origin.

USER: My source is San Francisco, CA - SFO.

ASSISTANT: Do you have any preferences?

USER: I prefer a lay by.

ASSISTANT: There is a flight 1015 in UA airline and price is 100 with a connection. Shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, Your ticket has been processed.

USER: Thanks for your support.

ASSISTANT: Thank you.