You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gregory Martinez.

ASSISTANT: How may I help you?

USER: I want to cancel my reservation, due to heavy rainfall in New York.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: There is no reservation found under your name.

USER: That's ok, thank you for your help.

ASSISTANT: Most welcome.