You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, can you mention your name to proceed further?

USER: I am Sandra Hernandez.

ASSISTANT: Sorry, no reservation found on your name to cancel it.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.