You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Margaret Williams.

ASSISTANT: How can I assist you?

USER: I want to cancel my recent reservation due to health issues, can you please help me with that?

ASSISTANT: Sure, I am here to help you. Please wait a moment, I will check the status of your reservation.

USER: Sure.

ASSISTANT: Margaret Williams, I have found your reservation and I cancelled it successfully.

USER: Thank you.

ASSISTANT: Thank you for reaching us.