Hi.
Hello. How can I aid you?
My name is Brian Gonzalez. I want to reschedule my journey dates to go for a  trip. So, help me in changing the reservation.
Ok, please wait I will revert you in a  moment.
Sure, take your time.
 Sorry, no reservation was found on your name.
No worries at all. Thank you for your kind information.
Thank you for availing us.