You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I want to cancel my recent reservation owing to an emergency.

ASSISTANT: Let me know your name to check your reservation?

USER: I am Cynthia Hernandez.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for choosing us.