You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What service you are expecting from us?

USER: I need to cancel my reservation due to some issues, can you help me out?

ASSISTANT: Sure, I am happy to help you with that. Can you please tell me your name to check your reservation?

USER: Myself Mary Martinez.

ASSISTANT: Ok, please give me a minute.

USER: Ok.

ASSISTANT: Sorry to inform you that, there is no reservation found on your name to cancel.

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

ASSISTANT: You are welcome. Thank you for connecting with us.