You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Please cancel my recent reservation owing to an emergency.

ASSISTANT: Sure, we are here to help you. Let me know your name to proceed further?

USER: I am Justin Martinez.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no reservation found with provided name.

USER: Thanks.

ASSISTANT: Thank you for approaching us.