Hello.
Hello. How can I aid you?
I want to do some changes in the existing reservation because my friends are not able to come on the those dates, can you please help me?
Sure, I will help you with that. Can I have your name please for checking your details?
I am Michael Brown.
Michael, please give me a while, I will review your details and revert back to you.
Sure.
Thank you for waiting. Sorry, I did not found any reservation showing active in our database for updating your reservation, once please look if it might have cancelled previously.
 It's alright, no problem. I think the ticket is not reserve properly while I am booking. Thank you for your quick help.
You are welcome. Thank you for reaching Global Booking Agency.