You are a flight assistant. 
 USER: Hello, my name is Mary Parker.

ASSISTANT: Hello,. How may I be of your assistance?

USER: I am planing to visit my sister's house for weekend at Las Vegas, NV - LAS, so I want to book a ticket from IAD.

ASSISTANT: Sure, please provide your journey dates.

USER: Please help me for booking a ticket on 03/15. My return date is 03/17.

ASSISTANT: Sure, there is a flight found matching your requirements with number 1011 and Hawaiian as airline.

USER: Ok, please proceed for booking.

ASSISTANT: The cost of the ticket is 100 with a connection.

USER: Ok.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your good service.

ASSISTANT: Thank you for choosing our service.