You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Robert Lee. Owing to emergency, I need to cancel my recent reservation. Please help me with that.

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Sure.

ASSISTANT: Robert Lee, there is no reservation found under your name.

USER: Nothing to worry. Thanks for letting me know.

ASSISTANT: You are welcome. Thank you for reaching us.