You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you please cancel my recent reservation? As I can't catch the flight right now due to health issues.

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

USER: Sure, my name is Lisa Rodriguez.

ASSISTANT: Wait a moment please.

USER: Sure, take your own time.

ASSISTANT: Lisa Rodriguez, we haven't found any reservation under your name in our database.

USER: Oh! May be my friend has already cancelled it. Thank you anyways.

ASSISTANT: Thank you for choosing us.