Hello,.
user
Hello.
assistant
I am Jason Edwards.
user
How may I aid you today?
assistant
I want to cancel my recent reservation due to some issues, can you please help with that?
user
Sure, I will help you. Thanks for your time,  you have not reserved with any of the airlines. We can not change the existing reservation.
assistant
Thank you.
user
Thank you for choosing us.
assistant
Thanks for your service.
user