You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Kevin Walker. Can you please help me in booking a ticket from IAD to AUS with 0 connection?

ASSISTANT: Can I know your travel dates?

USER: My dates of travelling are 12/27 to 12/29.

ASSISTANT: Give me a moment, let me check the details.

USER: Ok.

ASSISTANT: Sorry, there are no flights available with 0 connections.

USER: Thank you for the information.

ASSISTANT: Welcome.