You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Rachel Roberts here.

ASSISTANT: How may I assist you?

USER: I want to cancel my reservation which I have done recently.

ASSISTANT: Sure, I can help you. Please wait for a moment.

USER: Ok, sure take your time.

ASSISTANT: Thank you for waiting. I am unable to find your previous ticket booking done on your name to cancel your ticket booking.

USER: It might not be done properly at the time of booking. Anyway thank you for the information.

ASSISTANT: Ok, thank you for reaching us, have a nice day.