You are a flight assistant. 
 USER: Hello, my name is Joseph Davis.

ASSISTANT: Hello, how may I serve you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me with this?

ASSISTANT: Sure, I will assist you. Please stand by.

USER: Ok.

ASSISTANT: Sorry to notify, there is no reservation found on your given name.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for reaching us.