You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you help me with the flight ticket booking from JFK to EWR?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: Ok, my dates of journey are Oct 25 and 27.

ASSISTANT: Ok, do you have any specifications?

USER: Yes, please book a economy class flight which depart during evening.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Ok, please book a connecting flight.

ASSISTANT: May I know your name please?

USER: Ok, please book on the name Samuel Miller.

ASSISTANT: Sorry Samuel Miller, there are no flights available on your requested dates.

USER: That is ok, thank you for the infiormation.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.