You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Carolyn Campbell here.

ASSISTANT: How can I help you?

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

ASSISTANT: Carolyn Campbell, I am willing to help you for this. Let me check your reservation status in our database.

USER: Thank you.

ASSISTANT: Sorry to intimate, no reservation is found with your criteria.

USER: Ok, no problem.

ASSISTANT: Thank you very much for reaching us.

USER: Thank you.