Hello
Good morning! You've reached Fly high customers service. How may I help you today?
I'd like to change my seat, please.
Sure! I'd be glad to assist you with that. Could you please help me with your last name and the booking confirmation number?
Ok, my last name is McCain and the booking confirmation number is 0778065
I apologize, could you please help me with your correct booking number which consists only 6 characters mix of letters and number?
Ok, sorry, the booking number is O778O5
Awesome! May I know which seat would you like to prefer? (window/middle/aisle)
Window, please.
Definitely! I've gone ahead with your request and here is your new seat  number i.e 3b which is a window seat, hope that will be comfortable.
yes, perfect, thank you
You're welcome! Is there anything else that I may help you with?
No.
Thank you for visiting us, I'm glad I could assist in this regard. Have a nice time!