You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of help you are looking from our service?

USER: I am a formula one racer and I was going to take a part in a competition in a sports stadium in Chicago but unfortunately I got injured recently, so I will not be able to attend on that date as I need to consult the doctor regarding that injury. Can you please cancel my recent reservation?

ASSISTANT: Sure, I am here to help you about cancellation of your reservation.

USER: Thank you for considering my request.

ASSISTANT: Can you please let me know your name on which ticket is booked to find the reservation with your name to cancel?

USER: Yes, the previous reservation is done under the name of Carolyn Martinez.

ASSISTANT: Please wait for sometime, to check the reservation status and will revert you back with the information.

USER: Sure, I will wait for your response.

ASSISTANT: I regret to say about your reservation Martinez, there are no active reservations with your name in our booking list to cancel your reservation.

USER: That's fine, not an issue. I will find any other way to find my reservation. Thank you for spending your valuable time.

ASSISTANT: You are most welcome, thank you for reaching our service. Hope you have a nice day ahead.