You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me with the amend of my reservation which I had done recently?

ASSISTANT: Sure, I am here to help you out. Please provide me your name.

USER: Yes, I had reserved on the name Daniel Harris.

ASSISTANT: Sorry Harris, there is no active reservation on your name in our data base.

USER: Ok, thank you for checking the reservation records for me.

ASSISTANT: Thank you for reaching us.