Hello. I am David Nelson.
user
Hello, how can I assist you?
assistant
 I have a conference at Boston University in MA-BOS. Can you book a ticket from CO-DEN?
user
Sure, when are you planning to travel?
assistant
 My travel dates are 02/05 and 02/07.
user
Please provide your specifications.
assistant
I need a connecting flight within 500 range.
user
Delta airlines with single connection and price is 100 of 1018 flight. Shall I proceed?
assistant
Ok, you can proceed further.
user
Your ticket has been confirmed.
assistant
Thank you for booking.
user
Thank you.
assistant