You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Mary Hernandez. I want to cancel my recent reservation. Could you help me with that?

ASSISTANT: I am happy to help you, please wait for a minute to check your reservation status.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name to cancel it. Thanks for contacting us.

USER: That's ok, no problem. Thank you.

ASSISTANT: Welcome Mary Hernandez.