You are a flight assistant. 
 USER: Hello. Joseph Carter here.

ASSISTANT: Hello, how can I assist you?

USER: Can you find a book for me from OAK to LAS? My travelling dates are from 07/04 to 07/06.

ASSISTANT: The UA airline with flight number 1012 is available having price as 200 and connection is 1.

USER: That's great. Please proceed for ticket booking.

ASSISTANT: Ok. Your flight ticket is booked.

USER: Thank you.

ASSISTANT: Happy journey.