You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Sharon Brown. Owing to an emergency, I want to cancel my reservation. Could you help me in the cancellation?

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is no reservation found with your given name in our data.

USER: Not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you.