You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need to travel from OAK to DFW?

ASSISTANT: Sure, I will help you. May I know your planned travel dates please?

USER: My trip dates are Feb 16 to 18.

ASSISTANT: Can I have your name please?

USER: Ronald Collins here.

ASSISTANT: Do you need a connecting flight?

USER: I need a single connecting flight.

ASSISTANT: May I know your class preference?

USER: I am comfortable in any class.

ASSISTANT: Do you have any other requirements?

USER: Please ensure that my depart time is afternoon.

ASSISTANT: I found an economy class in United Airlines with fare 100 and it has single connection. Can I book your ticket?

USER: Ok, please proceed.

ASSISTANT: Ok, your booking is confirmed with flight number 1001.

USER: Thank you.

ASSISTANT: Thank you for choosing us, have a nice day.