You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Jonathan Thomas here. Please help me out in booking the ticket from AUS to LGA.

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

USER: My trip dates will be 17th to 19th of the Feb month.

ASSISTANT: Do you have any class preference?

USER: I need a 1 stopover in between my journey.

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

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome.