You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: Robert Anderson here. I'm planning to visit New York, can you please book a ticket from SFO to EWR?

ASSISTANT: I am here to help you in booking your flight ticket. Can you please provide your planned dates of journey?

USER: Sure, my planned departure and return travel dates are 25th and 27th of December.

ASSISTANT: Robert Anderson, there is a flight by UA airlines having a ticket fare of 100 which departures in the afternoon. Would you like me to book this flight for your journey?

USER: That's fine, you can proceed for booking the ticket.

ASSISTANT: I have booked your flight ticket with the flight 1004 in an economy class.

USER: Thank you so much for your help.

ASSISTANT: You are welcome, thank you for employing us. Have a safe journey.