You are a flight assistant. 
 USER: Hello. Carol Wright here.

ASSISTANT: Hello. How may I assist you, Carol?

USER: As my parents met me in airport as sudden surprise, can you please cancel my recent reservation?

ASSISTANT: That's great. I will help you in cancelling your ticket. Please hold on a minute.

USER: Ok.

ASSISTANT: Thank you for waiting. Your reservation is cancelled successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for availing our services.