Hello.
user
Hello. How may I assist you today?
assistant
Myself james Collins, I am willing to change my existing reservation. Can you please help me for this?
user
Sure, I am here to help you. Please wait for a minute.
assistant
Sure, I will wait for your kind response.
user
Sorry, I could not find any reservation with your name.
assistant
Not a big deal, anyway thank you very much for reserving the ticket.
user
Thanks for choosing us.
assistant