You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Thomas Brown. I want to book a flight ticket to DEN from OAK, could you please help me out?

ASSISTANT: Sure, I will help you. May I know the dates of journey?

USER: My travelling dates are from 02/28 to 03/01.

ASSISTANT: There is a flight with airline:AA with connection 1. Can I book it?

USER: Make sure my ticket fare must be within 200.

ASSISTANT: Fare is 100.

USER: Ok, proceed booking.

ASSISTANT: Your ticket is booked with number 1015. Have a safe flight.

USER: Thank you for your help.

ASSISTANT: My pleasure.