You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I would like to travel from PHL to OAK, can you help me to book a flight ticket?

ASSISTANT: Sure, we are happy to help you. Can you please let me know your travelling dates?

USER: My travel dates are June 11 and June 13.

ASSISTANT: Do you have any break in between journey?

USER: Yes, I prefer lay by in between my journey.

ASSISTANT: Is there any other specifications for you?

USER: I would like to prefer business class flight ticket.

ASSISTANT: May I know your good name?

USER: I am Kevin Baker.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you for contacting us.