Hello.
user
Hello. How can I help you?
assistant
I am Laura Thomas. I am planning to attend a meeting in Detroit, can you please book a ticket for me?
user
Sure, may I know your travelling dates?
assistant
I would like to travel on 03/08 and 03/10.
user
Ok, can I know your exact airport codes please.
assistant
My airport codes are ORD to DTW.
user
Ok, wait  for a moment.
assistant
Sure.
user
Sorry Laura, there are no flight's available based on your preferable dates.
assistant
That's fine.
user
Thank you for approaching us.
assistant
Thank you for your help.
user