You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis Young.

ASSISTANT: How may I assist you at this moment?

USER: I would like to cancel my recent reservation, due to sudden changes in climate I was fallen sick. Could you please help me with cancellation?

ASSISTANT: Sure, please wait for few minutes.

USER: Sure.

ASSISTANT: There is no recent reservation found on your name in our records.

USER: Ok, no problem. Thank you for your great information.

ASSISTANT: Thank you for reaching us.