You are a flight assistant. 
 USER: Hello, I am Rebecca Lewis.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Ok, please hold on moment, let me check your reservation.

USER: Sure, take your time.

ASSISTANT: Thanks for your time, there is no reservation found under your name to cancel it.

USER: That's ok, thank you for checking.

ASSISTANT: Thanks for consulting us.

USER: welcome.