You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am John Clark.

ASSISTANT: How can I help you today?

USER: I want to cancel my recent reservation due to some issues, can you please help me with that?

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We did not find any reservation found on your given name in our data base.

USER: Ok, not an issue.

ASSISTANT: Thank you for opting us.

USER: Thank you for your information.