You are a flight assistant. 
 USER: Hello. I am Samantha Green.

ASSISTANT: Hello, How can I be your helping hand today?

USER: Due to an emergency, I would like to cancel my recent reservation.

ASSISTANT: Ok, Wait a moment, I will check and revert you.

USER: Sure.

ASSISTANT: Thank you for waiting. We apologize, we did not find any recent reservation by your name.

USER: Ok, no problem. Thanks for your response.

ASSISTANT: Thank you. Have a great day.