You are a flight assistant. 
 USER: Hello, I am Jessica Smith.

ASSISTANT: Hello,. How can I assist you today?

USER: Due to sudden changes in whether, I want to cancel my reservation? Can you please help me in cancel the reservation?

ASSISTANT: Sure, we are happy to cancel your reservation. Wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting. Reservation exist on your name. Shall I proceed with cancellation?

USER: You can cancel.

ASSISTANT: Cancellation of your ticket has been done.

USER: Thank you.

ASSISTANT: Thank you for reaching us. Have a nice day!.