Hello. Jonathan White here.
Hello Jonathan, welcome to Global booking agency. How may I help you today?
 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 for that?
Sure, I will help you on that. Please hold on for a moment to check your previous reservation status.
Ok.
Sorry Martin, there is no previous reservation available in our records. Would you like to ask us anything else?
Nothing.Thank you for the information.
Ok, thank you for reaching us, have a nice day.