Hello.
Hello. How can I help you?
I have to change my flight ticket reservation due to some wrong dates while I was booking, can you help me in changing my flight ticket?
Ok, please mention your good name.
My name is Samantha Garcia.
Please be hold on for  a moment.
Sure.
Sorry Garcia, no reservation found by your name in our website.
Ok, that's fine, thank you for your help.
It's my pleasure, have a good day.