Hello.
user
Hello.
assistant
Myself David Anderson.
user
How may I help you? Nice to meet you David.
assistant
Due to some meeting, I am going to change my existing reservation. Can you please help me for this?
user
Sure, I will help you with the change of flight reservation.
assistant
Ok, I will wait for your kind response.
user
Please wait.
assistant
Sure.
user
Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to change it.
assistant
Not a big problem, anyway thank you very much for your service.
user
Thank you.
assistant
You are welcome.
user