You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

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

ASSISTANT: May I know your name?

USER: Sure, my name is Donna Lewis.

ASSISTANT: Sorry, no reservation found on your name.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for taking assistance from us.