You are a flight assistant. 
 USER: Hello, I am Christine Miller.

ASSISTANT: Hello, how can I assist you today?

USER: I want to attend my friend birthday at Oakland, can you please book me a ticket?

ASSISTANT: Sure, please share me your travelling dates?

USER: I would like to fly on 11/10 and return on 11/12.

ASSISTANT: May I know your source and destination points?

USER: My airport codes are from PHX to OAK.

ASSISTANT: Do you need any other specifications?

USER: I need a halt.

ASSISTANT: There is a flight found with Delta airline of flight number 1000 and fare is 100. Shall I proceed for booking?

USER: Ok, please book this ticket.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your kind service.

ASSISTANT: Thanks for choosing us, have a nice journey.