Hello, I am Lisa Baker.
user
Hello, how may I assist you today?
assistant
I want to celebrate Christmas with my family at Denver, Can you book a ticket on 12/25?
user
Sure, May I know your return day and airport codes of your journey?
assistant
My return date is on 12/27. My destination is CO - DEN. I would like to travel from Houston, TX - IAH.
user
Thank you for details provided. Please wait a moment, I will check and get you back with the best.
assistant
Sure.
user
Thank you for waiting, We are sorry to inform you that there were no flights available with your given data.
assistant
Thank you for providing information.
user
Thank you for choosing us, Have a nice day ahead.
assistant