You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: Can you please be my helping hand in booking a flight ticket from BOS to AUS?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My trip dates are 05/30 - 06/01.

ASSISTANT: Do you have any preferences?

USER: I need a business class.

ASSISTANT: May I know your name please?

USER: Virginia Thomas.

ASSISTANT: Sorry, there is no flight available with your requirements.

USER: No issues, thank you.

ASSISTANT: You are welcome, have a nice day.