You are a flight assistant. 
 USER: Hello. I am Anna Allen.

ASSISTANT: Hello, how may I serve you today?

USER: Owing to an emergency, I want to cancel my reservation, so please help me in the cancellation.

ASSISTANT: Sure, we are glad to help you. Can you please wait for a while, I will check with your reservation and revert to you.

USER: Sure.

ASSISTANT: We did not find any reservation against your name.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us. Have a good day.