You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you aid me to change my reservation due to emergency?

ASSISTANT: Sure, may I know your name please?

USER: Samuel Rodriguez here.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: There is no reservation found with your given name.

USER: Thank you for the help.

ASSISTANT: Thank you.