You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Elizabeth Johnson.

ASSISTANT: How can I assist you today?

USER: Please help me in booking my flight ticket from DEN to OAK?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travelling dates are 07/23 and 07/25.

ASSISTANT: Please give me a moment.

USER: Ok, sure.

ASSISTANT: Thanks for waiting, there is a flight with price 100 and the connections 1 is available. Shall I confirm your ticket?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is booked. The flight number is 1023 and the airline is UA.

USER: Thank you for your help.

ASSISTANT: Welcome, have a great day.