You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I want to cancel my recent reservation as my plan to meet my grand parents got postponed due to my health issues. Can you please help me?

ASSISTANT: Sure, I am here to help you. May I know your name?

USER: I am Brenda Williams.

ASSISTANT: There is no reservation found under your name.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.