You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be of your help?

USER: I would like to cancel my resent reservation due to my plan to meet my grand parents got cancelled. Can you help me in cancellation?

ASSISTANT: May I know your good name please?

USER: I made a reservation by this name Justin Williams.

ASSISTANT: Ok, please wait a while.

USER: Ok.

ASSISTANT: Unfortunately we didn't found any reservation matching your name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.