You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Steven Nelson. I want to book a ticket from BOS to AUS.

ASSISTANT: Sure, may I know your journey dates please?

USER: The travel dates are from 10/25 to 10/27. Connection limit should be 1.

ASSISTANT: Please allow me a moment to check for the availability of flight.

USER: Ok.

ASSISTANT: Your patience is greatly appreciated. Steven, I am sorry to inform you that there is no flight available at your request.

USER: That's ok. Thank you for your help.

ASSISTANT: You are welcome. Thank you for contacting us.