You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you today?

USER: I am Barbara Hernandez.

ASSISTANT: Ok.

USER: I want to book a flight ticket from SFO to AUS to meet my friend, can you please help me to book a flight with single connection?

ASSISTANT: Sure, may I know your travel dates?

USER: My journey dates are from 01/25 to 01/27.

ASSISTANT: Ok, please wait for a moment. Sorry, there are no flights found with your given details.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for opting us.