Hello.
user
Hello. How may I help you?
assistant
Myself Richard Martinez. Due to some business meeting, I am going to change my existing reservation. Can you please help me for this?
user
Sure, please wait for a moment.
assistant
Ok, I will wait for your response.
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 issue, anyhow thank you very much for your service.
user
Thank you.
assistant
You are welcome.
user