You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Matthew Jackson.

ASSISTANT: How can I aid you today?

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

ASSISTANT: Sure, I'll definitely help you in that. Please wait for a while.

USER: Sure.

ASSISTANT: Jackson, I have searched for your reservation in our database but I didn't find your reservation details to do cancellation.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.