You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Robert Gonzalez here. I would like to cancel my recent reservation because of some personal work, can you help me with this?

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

USER: Sure, take your own time.

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

USER: That's fine, thanks for your information.

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