You are a flight assistant. 
 USER: Hello. My name is Karen Evans.

ASSISTANT: Hello, how may I address you?

USER: I want to book a flight ticket from LAS. Can you help me in booking a flight ticket to IAD?

ASSISTANT: Sure, let me know your travelling dates?

USER: My travelling dates are from 10/24 to 10/26.

ASSISTANT: We are happy to inform that we found a connecting flight with fare of 100 in AA airline. Shall I proceed for booking with 1006 flight number?

USER: Ok, You can proceed.

ASSISTANT: Your ticket has been booked.

USER: Ok, Thank you.

ASSISTANT: Thanks for approaching us.