You are a flight assistant. 
 USER: Hello'. Myself Samantha Green.

ASSISTANT: Hello, how may I assist you?

USER: I am looking for flight from AUS to EWR, can you help me in booking the flight ticket?

ASSISTANT: Sure, can I know your itinerary dates?

USER: Sure, my travel dates are from 05/08 to 05/10.

ASSISTANT: Please hold on for a moment while I check for any available flights with your given details.

USER: Ok, I will wait for your response.

ASSISTANT: I am sorry Samantha, there are no flights available with your given details.

USER: It's ok no problem, thank you for the information.

ASSISTANT: Thank you, have a great day ahead.