You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mark Jackson.

ASSISTANT:  How can I help you?

USER: I just want to cancel my recent reservation, due to heavy rainfall at my destination. Can you help me with that?

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT:  Sorry, no reservation was found on your name.

USER: Ok, not an issue. Thank you.

ASSISTANT:  Thank you for opting us.