You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can you please tell me which help you are looking for?

USER: I want to book a flight from EWR to visit my sister house. Can you book a flight to JFK?

ASSISTANT: Sure, may I know your preferred journey dates please?

USER: I will travel on Sept 12 and return on Sept 14.

ASSISTANT: Ok, please tell me your name to proceed further.

USER: My name is Joseph Brown.

ASSISTANT: Is there any connection limit preference?

USER: I prefer a connecting flight.

ASSISTANT: Sorry to inform you that, I have not found any flight in this route with the dates you have provided to me.

USER: Ok, thank you for the information.

ASSISTANT: You are most welcome. Thank you for contacting us.