You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Miller.

ASSISTANT: How can I help you?

USER: My business trip has been cancelled so I would like to cancel my recent reservation. Can you please help me with that?

ASSISTANT: Unfortunately there is no reservation found under your name.

USER: Ok, fine. Thank you.

ASSISTANT: Thanks for reaching us.Have a nice day.