You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Due to some health issues, I would like to cancel my recent reservation. Please help me out.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Could you please tell me your name?

USER: Sure, my name is Benjamin Martin.

ASSISTANT: Martin, there is no reservation with your name to cancel further.

USER: Ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for approaching us, have a great day.