You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to book a ticket from SFO to PHL. Could you book a ticket?

ASSISTANT: Sure, I am happy to help you. Can I have your travelling dates?

USER: Depart is by June, 6 and return date is June, 8.

ASSISTANT: Do you prefer any break in between journey?

USER: I would prefer connecting flight.

ASSISTANT: Are there any other specifications for you?

USER: I prefer business class.

ASSISTANT: May I know your good name?

USER: My name is Sarah Rodriguez.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: Thanks.

ASSISTANT: Thank you for choosing us.