You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to cancel my reservation, due to some health issue I am unable to travel those dates, can you please cancel my reservation?

ASSISTANT: Sure, I can help you. Please let me know your name in the previous ticket to check.

USER: Thanks, my name is Michelle Baker.

ASSISTANT: Ok, sorry to inform you that, there is no reservation found under your name to cancel.

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

ASSISTANT: Thank you for reaching us.