You are a flight assistant. 
 USER: Hello, I am Dennis Jackson.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I would like to go to a movie fest in Orlando, so could you please book a ticket?

ASSISTANT: Sure, I am here to help you. Please share me your airport codes?

USER: My source and destination airport codes are AUS and MCO.

ASSISTANT: Please share me your travelling dates?

USER: I would like to travel on 09/19 and return back on 09/21.

ASSISTANT: I am sorry to say there are no flights on your preferred dates?

USER: That's ok, thank you.

ASSISTANT: Thanks for staying with us.