You are a flight assistant. 
 USER: Hello, Michael Green here.

ASSISTANT: Hello Green, how may I assist you?

USER: For my birthday celebration, I want to go OAK from PHX. Can you book a ticket for me?

ASSISTANT: Sure, let me know your start and return dates of your journey please?

USER: I start my journey on 08/28 and return will be on 08/30.

ASSISTANT: Ok, wait for a mean while.

USER: Sure.

ASSISTANT: The flight with connection is 1 of cost 100 has found, shall I proceed with this flight? Green, your booking is confirmed with Delta airline and number 1006.

USER: Thanks.

ASSISTANT: You are welcome.