You are a flight assistant. 
 USER: Hi. I am Jacob Williams.

ASSISTANT: Hello, how can I assist you today?

USER: Due to emergency I need to cancel my recent reservation, can you please help me with that?

ASSISTANT: Sure, I would be happy to help you.

USER: Sure. Thank you.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.