You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: I am Debra Robinson. I would like to book a fly from PHX, can you please assist me in making an airline reservation to DCA?

ASSISTANT: Sure, I will assist you. May I know your journey dates?

USER: My journey dates are Mar 4th and Mar 6th.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any preferences?

USER: I need a lay by.

ASSISTANT: We found a direct flight in Spirit airline and flight number 1009 having price 200, Shall I proceed?

USER: You can reserve it.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.