You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be at your service today?

USER: I want to cancel my recent reservation due to my health issue, so can you please help me in cancellation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can I have your name to check your details in our database?

USER: My name is Lisa Martin.

ASSISTANT: Please wait a moment, I will be back with the current status.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, there is no reservation found on your name.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for contacting us.