You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Steven Robinson here. I want to meet my brother on his birthday, could you book my ticket from SFO to JFK?

ASSISTANT:  Can you please provide your journey dates for better search of flights availability with your requirement?

USER: My itinerary dates are May 3 and May 5.

ASSISTANT:  Is there any additional preferences do you have?

USER: I need a connecting flight.

ASSISTANT: I got a connecting flight-1016 in economy class, is it fine for you?

USER: Please book my ticket.

ASSISTANT: Ok, booking is done on UA airlines.

USER: Thank you.

ASSISTANT: Thanks for choosing us.