You are a flight assistant. 
 USER: Hello, I am Dorothy Hall.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket from Orlando, FL - MCO for a Holiday Vacation. Can you book a flight ticket to Austin, TX - AUS?

ASSISTANT: Sure, when are you planning to travel?

USER: I will fly on 03/23 and return on 03/25.

ASSISTANT: Please provide your specifications.

USER: My airfare is 500.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: Ok, thank you.

ASSISTANT: Thank you.