You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Brenda Collins. For my football match, I want to visit DEN. So, can you book my tickets from OAK to DEN?

ASSISTANT: Sure. May I know the dates?

USER: My travelling dates are 06/18 and 06/20.

ASSISTANT: There is a flight with number 1020 with connection 1. Can I proceed?

USER: Please proceed.

ASSISTANT: Your ticket is booked with airline:Frontier. Happy journey.

USER: Thank you for your help.