You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you book a flight ticket from PHL to EWR?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are 07/28 and 07/30.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I want to return in evening time.

ASSISTANT: May I know your name please?

USER: Ashley Williams here.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for opting us.