You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Angela Robinson here.

ASSISTANT: How may I assist you today?

USER: I want to book a flight ticket from AUS to MCO. Can you help me in that?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable dates of travelling?

USER: My trip dates are Jan 26 to Jan 28.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight with business class.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your planned dates of travelling.

USER: Ok, no problem. Thank you for checking.

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