Hello.
Hello. How may I aid you today?
I need some help with changing my flight ticket booking, can you please help me with that one?
Sure, I am here to help you with that.
Thank you for considering  my request.
Could you send me your full name?
My name is Emma Lewis.
Ok, wait for a minute so that I will check the reservation status.
Sure, I can wait for your response.
Sorry to inform you that, there is no reservation found on your name in our database.
No problem with that one, thank you for checking my previous reservation.
Thank you for approaching us.