You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Would it be possible to change my reservation, which I have done with my name?

ASSISTANT: Sure, please share me your name to check the details in our database.

USER: My name is Charles Gonzalez.

ASSISTANT: Please wait a moment.

USER: Sure.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.