You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Due to the appointment cancellation of doctor, I want to cancel my reservation.

ASSISTANT: May I know on which name do I need to cancel the reservation?

USER: Rachel White here.

ASSISTANT: There are no active reservations found with your details, White.

USER: That's not a big deal. Thank you for searching.

ASSISTANT: Thank you for reaching us.