You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I best assist you now?

USER: I want to cancel my reservation which is done recently due to some health issues, can you please help me?

ASSISTANT: Sure, we are glad to assist you in that.

USER: Thank you.

ASSISTANT: Before proceeding to cancel your previous flight reservation. May I know your name?

USER: Sure, my name is Brandon Martin.

ASSISTANT: Thank you. Please wait for a while, let me check your reservation status.

USER: Sure, I will wait.

ASSISTANT:  I am very sorry to inform you that there is no reservation found under your name in our database.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thanks for contacting us.