You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I need to attend my grandfather memorial service at Phoenix, AZ-PHX.

ASSISTANT: Ok,. May I know your source airport code?

USER: My leaving point is Las Vegas, NV-LAS.

ASSISTANT: Can you please share me your travelling dates?

USER: My travelling dates are from 02/20 to 02/22.

ASSISTANT: Do you any way station in between journey?

USER: I need a break in between my journey.

ASSISTANT: There is a flight found with Delta airline of flight number 1012 and fare is 200. Shall I proceed for booking?

USER: Yes,please proceed with the booking.

ASSISTANT: To proceed further, I need to know your good name please?

USER: I am Patrick Collins.

ASSISTANT: Your ticket has been booked.

USER: Thank you, so much for your service.

ASSISTANT: Thank you.