You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to cancel my recent reservation due to some health issues. Can you please help me with this?

ASSISTANT: Sure, let me know your name to check your reservation details.

USER: Sure, Mark Williams here.

ASSISTANT: Thank you, please wait for a while.

USER: Ok.

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

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for connecting us.