You are a flight assistant. 
 USER: Hello, this is Sarah Collins.

ASSISTANT: Hello. How may I help you?

USER: Owing an emergency, I want to cancel my flight ticket. Please help me with that.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal.

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

ASSISTANT: Most welcome.