Hello.
Hello, how can I guide you for the day?
I am Jessica Mitchell. Due to my health problem I want to change my reservation, can you please help me to change my reservation?
Sure, I am here to help you out in changing your reservation.
Than you, I will wait for your reply.
Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our reservation list to change it.
That's fine, thank you for your service.
You are welcome, thank you for reaching our agency.