You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I abet you?

USER: Book a ticket from DCA to OAK under a fare of 1000.

ASSISTANT: Sure, when are you planning to travel?

USER: I am planning to travel on 05/17 and on 05/19.

ASSISTANT: May I know your name?

USER: Gregory Jones is my name.

ASSISTANT: Ok, please wait. Spirit airline with flight number 1012 is going on your way and the fare is 200. Shall I proceed?

USER: Ok, please book it.

ASSISTANT: Your booking has been done.

USER: Thank you.

ASSISTANT: Thank you for opting us.