You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to change my existing reservation due to my board exams. Can you help me for that one/.

ASSISTANT: Sure, I am here to help you. May I know your name please?

USER: Sure, my name is Nicolas Edwards.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no active reservation found on your given name.

USER: No issues, thank you for the information.

ASSISTANT: Thanks for contacting us.