Hello. My name is Kevin Lee.
user
Hello Lee. Welcome to our flight agency.
assistant
I need to change my existing reservation as my is sister blessed with a baby before the expected delivery date. Can you help me in changing the reservation?
user
Sure, give me a moment. Sorry, there is no reservation with your details.
assistant
That's ok. I will travel by other means. Thank you for your time.
user
Most welcome.
assistant