You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Jessica Perez, I want to book a flight from NY-JFk to PA-PHL to attend a meeting. Can you book a business class flight for me?

ASSISTANT: Sure, please share your trip dates?

USER: I will fly on 09/21 and return on 09/23.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a halt in between my flight journey.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no business class flight.

USER: Thank you for the information.

ASSISTANT: Thank you for choosing us.