Hi.
user
Hello, how may I help you?
assistant
I need to change my reservation as my plan to go for trekking got postponed. Can you help me?
user
Sure, we are here to help you. May I know your name please?
assistant
Thank you. I am Charles Harris.
user
Sorry to inform you that there is no active reservation on your given name.
assistant
Ok fine, thanks for your response.
user
Thank you for contacting us.
assistant