You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you please help me in that?

ASSISTANT: May I know your name?

USER: Carol Collins here.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name to cancel.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for reaching us.