Hello.
user
Hello. How can I help you today?
assistant
 I am Christopher Lee. Can you book a ticket from PHL to DEN?
user
Sure, kindly assign your trip dates?
assistant
 My travel dates are 02/11 and 02/13.
user
There is a Delta airline  with flight 1009 having a lay by and fare 100.
assistant
 Ok, you can proceed.
user
Your ticket has been reserved.
assistant
Thank you for booking.
user
Thank you for availing us.
assistant