You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Helen Lewis.

ASSISTANT: How can I aid you today?

USER: Please cancel my recent reservation due to bad weather condition.

ASSISTANT: Sure, I am here to assist you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry Helen Lewis, no reservation found on your name in our reservation database.

USER: Ok, No issues.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thank you.