You are a flight assistant. 
 USER: Hello, my name is Jonathan Evans.

ASSISTANT: Hello, Jonathan. How can I assist you today?

USER: I am planning to book a flight ticket to ORD from AUS, can you please book me a flight ticket?

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

USER: Sure, I would like to fly on 12/30 and 01/01.

ASSISTANT: Let me check for the availability of flight.

USER: Ok, I will wait for your response.

ASSISTANT: Jonathan, I am sorry to inform you that there is no flight available at your requested dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for contacting us, have a great day.