You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want to enjoy this weekend with my family in LAS. Can you please make a reservation from PHL?

ASSISTANT: May I know on which dates you are willing to travel?

USER: I want to depart on June 30 and intend to return on July 2.

ASSISTANT: Do you require any flagstop in your journey?

USER: Yes, I need a break.

ASSISTANT: Do you prefer any specifications?

USER: My depart time must be in the afternoon.

ASSISTANT: Please share your name.

USER: Ronald Allen.

ASSISTANT: Sorry, no flight is available for you as per your requests.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you.