You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: I am planning to visit Museum of Arts at Philadelphia, could you please help me with booking a flight ticket from EWR to PHL?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: I would like to depart on Oct 12th and return on Oct 14th.

ASSISTANT: Do you have any connection limit preference?

USER: I need a connecting flight.

ASSISTANT: May I know your class preference?

USER: I need a economy class ticket.

ASSISTANT: Can you please provide your name to proceed further?

USER: I am William Thompson. Make sure that my return time must be evening.

ASSISTANT: William Thompson, we regret to inform you that there are no flight services are available on this route with your preference of evening return flight.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for contacting us.