You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I want to cancel my reservation which is done recently due to some heavy floods at Denver, can you please help me?

ASSISTANT: Sure, I will help you. Please let me know with the name that used for the booking.

USER: Sure, my name is Jessica Thomas.

ASSISTANT: Please allow me a minute of your time.

USER: Sure, I will wait.

ASSISTANT: Thank you. Jessica Thomas, I am really sorry to inform you that there is no booking done on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for understanding.

USER: Thank you for your service.

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