You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I provide assistance for you?

USER: I am Deborah Brown, I want cancel my reservation due to sandstorms at my boarding place.

ASSISTANT: Ok, please wait a while.

USER: Ok.

ASSISTANT: Thanks for your patience, Deborah Brown.

USER: Ok, thanks for your information.

ASSISTANT: As I checked with reservation list, no ticket on your name to cancel. Thanks for opting us.

USER: Thank you.