You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Can you aid me to cancel my ticket due to an emergency?

ASSISTANT: Sure, may I know your name please?

USER: Nicholas Allen here.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there was no reservation found with your given name.

USER: No issue. Thank you.

ASSISTANT: Thank you for choosing us.