Hi, myself Anna Davis.
user
Hello Anna, how can I help you today?
assistant
I would like to change my flight reservation as my father is unwell. Could you please help me?
user
Sure, I will help you with that. Please wait for a moment.
assistant
Sure, I will wait for your reply.
user
Sorry Anna, no active reservation found under your name.
assistant
No problem. Anyway, thank you for checking.
user
It's my pleasure, have a nice day.
assistant