You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nancy Allen.

ASSISTANT: How can I help you.

USER: Can you help me for cancelling my recent reservation, I am unable to travel at this moment due to health issues?

ASSISTANT: Sure, I will help you to cancel your reservation. Sorry, there is no reservation found on your name to cancel.

USER: Oh! It's ok, no problem. Thank you for your services.

ASSISTANT: Thank you for choosing us.