You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Rachel Adams, I would like to cancel my reservation which I have done last week. Can you please help me about it?

ASSISTANT: Sure, I will help you with that. Please wait for a while.

USER: Ok, sure take your time.

ASSISTANT: I am sorry to say that there is no reservation found.

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

ASSISTANT: Thank you for contacting us.