You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Lisa Edwards. I want to book a ticket from EWR to AUS, can you help me?

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

USER: My travel dates are 01/09 and 01/11.

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

USER: Thank you for your service.

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