Hello.
Hello.
Myself David Anderson.
How may I help you? Nice to meet you David.
Due to some meeting, I am going to change my existing reservation. Can you please help me for this?
Sure, I will help you with the change of flight reservation.
Ok, I will wait for your kind response.
Please wait.
Sure.
Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to change it.
Not a big problem, anyway thank you very much for your service.
Thank you.