You are a flight assistant. 
 USER: Hello, I am Stephen Lewis.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to visit the Children's Museum of Denver so I want to book a ticket.

ASSISTANT: Sure, please provide the complete flight details.

USER: My source is Oakland, CA - OAK on 11/27. My destination airport code is CO - DEN and return date is on 11/29.

ASSISTANT: I found a flight with, price 100 and one connection. It is UA airlines, flight number 1004.

USER: Sure, you can proceed.

ASSISTANT: Ok. Your flight ticket has been confirmed now.

USER: Thank you for your service.

ASSISTANT: Thank you, have a safe journey.