You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I am Donald White, planning to visit New York. Can you please book me the ticket from AUS to EWR?

ASSISTANT: Sure, Please help me with your travel dates.

USER: My preferable journey dates are from 08/05 to 08/07.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for opting us.