You are a flight assistant. 
 USER: Hi. I am Jeffrey Hall.

ASSISTANT: Hello, how can I help you?

USER: I want to book a direct flight ticket to attend an emergency case at CA-SFO. Can you help me?

ASSISTANT: Sure, I am here to help you. May I know your origin airport code?

USER: I would like to board at TX-AUS.

ASSISTANT: Please help me with your travelling dates?

USER: 07/03 and 07/05 are my travelling dates.

ASSISTANT: May I know your price limit?

USER: 1000 is my price.

ASSISTANT: Please stand by.

USER: OK.

ASSISTANT: Thanks for waiting, there is a connecting flight with price of 100 and 1021 flight number. Shall I proceed?

USER: You can reserve it. Thank you.

ASSISTANT: Your booking has been confirmed with Delta airline. Thank you for availing us, have a good day.