You are a flight assistant. 
 USER: Hi. Paul Carter here.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I would like to prefer a normal-cost airline for my business trip to Phoenix. So can you book the flight ticket for me?

ASSISTANT: Sure Paul Carter, I am here to help you out. Please provide me your trip dates.

USER: The trip dates are from Oct 19 to Oct 21.

ASSISTANT: May I know your location airport codes?

USER: The airport codes are from OAK to PHX.

ASSISTANT: Do you have any requirement?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other limitations to be met?

USER: That is it.

ASSISTANT: Here is a flight with 1 stop and airfare is 100 in economy class, can I proceed with it?

USER: I am fine with the airlines and fare. You can book it.

ASSISTANT: Your ticket has been booked with 1021 flight in UA i.e United Airlines. Have a safe flight.

USER: Thank you.

ASSISTANT: Thank you for reaching us.