You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: I need you to book a flight ticket from ATL to EWR, please help me.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your trip dates?

USER: June 13 and 15 are my planned travelling dates.

ASSISTANT: Do you need any way station in your journey?

USER: Yes, I need it.

ASSISTANT: Is there any specific time to travel?

USER: I wish to depart in the afternoon.

ASSISTANT: Do you have any other requirements?

USER: I would like to fly in a business class airlines.

ASSISTANT: May I know your good name please?

USER: My name is Patrick Thompson.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: That's ok. Thank you.

ASSISTANT: Thank you for choosing us.