Hello. I am Christopher Perez.
user
Hello, how can  help you today?
assistant
I want to postpone my scheduled trip due to an emergency. Can you aid me in amending my reservation?
user
Sure, please wait a moment.
assistant
Take your time.
user
Sorry to say, no reservation found with your name.
assistant
No issues. Thank you for checking.
user
Thanks for reaching us.
assistant