You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I support you today?

USER: I want to cancel my recent reservation due to some health issues. Can you help me with this?

ASSISTANT: Ok, please mention your name?

USER: My name is David Hernandez.

ASSISTANT: Please hold on.

USER: Ok.

ASSISTANT: Thanks for your time, no reservation was found on your name.

USER: Thank you.

ASSISTANT: Thank you.