Hello. Jennifer Turner here.
user
Hello, how can I help you?
assistant
I would like to change my existing reservation, due to my grand father health issue. Hoping that your helping me.
user
Sure, please wait for a while.
assistant
Sure.
user
We did not found any flight reservation on your given name.
assistant
Ok, no issues.
user
Thanks for choosing us.
assistant
Thank you for your information.
user
Thank you.
assistant