You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I assist you?

USER: I made a reservation earlier to meet my head, but due to some emergency I need to cancel my reservation. Can you please assist me in doing that?

ASSISTANT: Sure, can you please mention your name to check is there any reservation under your name?

USER: My name is Jonathan Lewis.

ASSISTANT: Sorry Lewis, there is no existing reservation under your name to cancel.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Ok, thank you for using our services. Hope you have a great day ahead.