Hello.
Hello. How may I aid you?
I am Robert Wilson. Can you please help me in changing my existing reservation?
Sure, I will help you with the change of flight reservation.
Thank you.
Wait for a moment please.
Sure, I will wait for your response.
Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to change it.
Ok, not an issue. Thank you for providing information.
Thank you.