You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Alexander Perez here. Owing to an emergency I have request you to cancel my reservation. Can you please help me out with that?

ASSISTANT: Sure, I will help you in cancelling the reservation.

USER: Thank you for accepting my request.

ASSISTANT: Please allow me a moment to check for your status.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting. Sorry, there is no active reservation have been found under your name in our database to cancel it.

USER: Ok, not an issue. Thank you for your valuable information.

ASSISTANT: Thank you for reaching us.