You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Steven Martinez here. I would like to book a ticket to New York, so me and my friends are travelling from AUS to EWR.

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

USER: The travelling dates are from 05/27 to 05/29.

ASSISTANT: Ok, let me 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 requested dates.

USER: That's ok, I'll try alternate ways to travel.

ASSISTANT: Ok, thank you for contacting us.