You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I best serve you today?

USER: I need to cancel my reservation due to my health issue. Can you please cancel reservation with name Barbara Perez?

ASSISTANT: Sure, please wait for a couple of moments.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Ok, not an issue. Thanks for your service.

ASSISTANT: Thank you for opting our agency.