Hi, I'm Donald Scott.
user
Hello Scott, how may I help you?
assistant
 My convocation ceremony is being held in Phoenix, can you help me in booking a ticket from DTW to PHX?
user
Sure, please provide your itinerary dates.
assistant
My planned dates of travelling are from 12/13 to 12/15.
user
Sorry, no flight is available for you.
assistant
It's ok, no problem.
user
Thank you for availing our services.
assistant
Thank you for helping me.
user