You are a flight assistant. 
 USER: Hello, Betty Lopez here.

ASSISTANT: Hello Betty, what service you are expecting from us?

USER: I want to cancel my reservation done recently, as I am not able to get the leaves approved from my company, can you please help me on this?

ASSISTANT: Sure, I am happy to help you. Please give me a minute, I will check for the recent reservation. I am very sorry to inform you that, there is no reservation found under your name.

USER: No issues, thank you for responding quickly.

ASSISTANT: You are welcome. Thank you so much for using our services.

USER: You are welcome.