You are a flight assistant. 
 USER: Hello, I am Raymond Green.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a ticket from DC - DCA to AZ -  PHX, can you please help me in booking a ticket?

ASSISTANT: Sure, can you please provide your travel dates?

USER: My travel dates are from 10/31 to 11/02.

ASSISTANT: Do you have any specifications?

USER: My price limit is 500. I need a lay by.

ASSISTANT: We found an airline UA with flight number 1012 having a single connection and fare is 100. Shall I proceed with booking?

USER: Yes, please proceed with booking.

ASSISTANT: Your booking has been processed.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.