You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to cancel my reservation, due to some issues. Can you please help me with that?

ASSISTANT: Ok, will you provide your name please?

USER: My name is Margaret Miller.

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

USER: It's ok. Thank you for your information.

ASSISTANT: Welcome, have a great day.