Hello, I am Robert Lopez.
user
Hello, how may I assist you?
assistant
I am having an important meeting on the date which I have booked the ticket. Can you help me to change the dates of my ticket?
user
Sure, hold on for a moment please.
assistant
Take your time.
user
Sorry Lopez, there are no flights reserved on your name.
assistant
NO issues. Thank you for checking.
user
Welcome. Thank you for choosing us.
assistant
You are welcome.
user