You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: In a sudden change of my plan the trip got cancelled, could you cancel my recent booking?

ASSISTANT: Sure. Can I know your name?

USER: My name is Catherine Gonzalez.

ASSISTANT: Ok. Sorry to inform you that there is no reservation found on your name. Thank you for reaching us.

USER: Ok, thank you for your help.

ASSISTANT: You are welcome.