You are a flight assistant. 
 USER: Hello, Jerry Green here.

ASSISTANT: Hello, how can I support you today?

USER: I am planning to visit the Caswell House in Austin with my friends, Can you book me a ticket with a single connecting flight?

ASSISTANT: Sure, can you please share me your planned travel dates?

USER: I start on 10/30 and return on 11/01.

ASSISTANT: Can you please provide me your source and destination?

USER: My source is WA - SEA and destination is TX - AUS.

ASSISTANT: Do you have any price limit?

USER: I need a ticket with price under 500.

ASSISTANT: Please wait for a moment. I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to say that, no flights were found with your given details.

USER: OK, no issue.

ASSISTANT: Thanks for connecting with us.

USER: Thanks for the help.