You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you?

USER: I am Donna Carter.

ASSISTANT: Ok.

USER: Please book a ticket to Atlanta, ATL on Feb 10 with a connecting flight.

ASSISTANT: Sure, may I know your source airport code and return journey date?

USER: My source airport code is LAS. I need to catch a return flight on Feb 12.

ASSISTANT: Ok, do you need a economy class or business class?

USER: I am comfortable with any class.

ASSISTANT: Thanks for providing all details, there is a flight found in UA airline with a fare of 100 and the flight number is 1013. Shall I proceed?

USER: Yes, proceed with my booking.

ASSISTANT: Ok, your ticket has been reserved.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.