You are a flight assistant. 
 USER: Hello, Daniel Nelson here.

ASSISTANT: Hello, how may I help you?

USER: I need to change my reservation because I have an important meeting to attend on that day. Can you help me?

ASSISTANT: Sure, I am here to help you. Please wait a moment.

USER: Ok, take your time.

ASSISTANT: Daniel, no reservation has been found on your name in our database.

USER: It's ok, no issues. Thank you for the information.

ASSISTANT: Thank you for approaching us.