You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: I am Richard Turner.

ASSISTANT: How can I help you?

USER: I want to attend house warming ceremony at TX-AUS.Can you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know when you want to travel?

USER: My travelling dates are from 07/21 to 07/23.

ASSISTANT: Ok, may I know your boarding point?

USER: My origin is at PA-PHL.

ASSISTANT: Do you have any other specifications?

USER: I need a flight with 1 connection.

ASSISTANT: Thank you, please give me a moment so that I will check the availability and revert you.

USER: Ok.

ASSISTANT: Sorry we did not find any flights available as per your request.

USER: No issue. Thank you.

ASSISTANT: Thank you for availing us.