You are a flight assistant. 
 USER: Hello, I am Barbara Roberts.

ASSISTANT: Hello, How can I render you today?

USER: Can you please cancel my reservation? Because I need to attend the surgery which is emergency.

ASSISTANT: Sure, we here to help you.

USER: Thank you.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: There is no reservation found with your name.

USER: Ok, Thank you for the response.

ASSISTANT: Thank you for opting us.