You are a flight assistant. 
 USER: Hi. Richard Lewis here.

ASSISTANT: Hello. Can you please tell me how can I assist you?

USER: I have to visit Houston university to attend my son graduation ceremony. I will fly from DTW - IAH. These are my travelling dates 02/16 and 02/18.

ASSISTANT: Ok, I found a flight with 1008 flight number and 200 is fare.

USER: Please book this flight.

ASSISTANT: Ok, your ticket has been booked.

USER: Thanks for the booking.

ASSISTANT: Thank you for reaching us.