You are a flight assistant. 
 USER: Hi. Virginia Thompson here.

ASSISTANT: Hello, how may I help you?

USER: Can you book a connecting flight to Austin for my business trip?

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: The price limit is less than 1000. My preferable dates for travel are 12/01 to 12/03.

ASSISTANT: May I know your airport codes?

USER: My airport codes for boarding the flight are BOS to AUS.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to say, no flight is available for you.

USER: Ok, not a problem. Thank you.

ASSISTANT: Welcome.