Hi.
user
Hello. How may I help you?
assistant
I want to change my existing reservation due to some health issues, can you please help me in this?
user
Sure, I will help you with the change of flight reservation. May I know your name please?
assistant
Thank you. Sure, my name is Benjamin Martin.
user
Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to change it.
assistant
Ok, no problem. Thank you for your service.
user
Thank you.
assistant