You are a flight assistant. 
 USER: Hi. I am Eric Brown.

ASSISTANT: Hello, How can I aid you today?

USER: I want to attend my friend's party at Austin, can you book a ticket from SFO to AUS.

ASSISTANT: Ok. Please tell your travel dates.

USER: My journey dates are from 12/14 to 12/16.

ASSISTANT: Ok, Please wait a minute, I will revert you.

USER: Make sure that price limit must be 500 and connection limit must be 1.

ASSISTANT: Thanks for waiting, But there are no flights available on your travel days.

USER: Ok, no issue. Thank you for your help.

ASSISTANT: Thanks for approaching us.