Hello.
user
Hello, thank you for using chat service. How can we help you today?
assistant
I want to change my existing reservation due to bad health issues, can you help me with that?
user
I feel happy to help you with your issue. May I know your name to check with the reservation status?
assistant
Sure, I am Melissa Hall.
user
Please allow me 2-3 minutes while I check with the reservation status.
assistant
Ok, I will wait for your response.
user
Thank you for waiting,  Melissa Hall. Melissa Hall, regret to inform that there is no active reservation found under your name to amend.
assistant
Ok, no issues. Thank you for your information.
user
Thank you for reaching our chat service.
assistant