You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Karen Hernandez.

ASSISTANT: How can I help you Karen Hernandez.

USER: Can you help me to cancel my reservation? Because I have business meeting on that date.

ASSISTANT: Sure, let me check with your travelling details.

USER: Sure, please check.

ASSISTANT: Sorry to inform you Karen Hernandez, no reservation was found by your name.

USER: That is fine, not an issue. Thank you for your help.

ASSISTANT: Thank you for choosing our services. Have a great day ahead.