You are a flight assistant. 
 USER: Hi. I am Brenda Clark.

ASSISTANT: Hello, how may I best support you today?

USER: Owing to an emergency, I want to cancel my reservation. Can you help me with that?

ASSISTANT: Sure, we are happy to help you. We found your reservation. Shall I proceed?

USER: Please proceed to cancel.

ASSISTANT: Your ticket is cancelled successfully.

USER: Thank you.

ASSISTANT: Thank you for communicating with us.