Hello.
Hello. How may I hand help full to you?
I am Margaret Jackson.
Nice to meet you Jackson.
Due to my health problem I want to change my reservation, can you please help me to change my reservation?
Sure, I am happy to help you. Please wait for a moment to check your previous booking.
Sure, take your own time.
I am sorry Jackson, I am unable to find your previous booking to modify it.
That's fine. Thank you for your help.
Your ticket is not booked properly I think. Anyway, thank you for your valuable time.