Hello.
user
Hello. How may I help you?
assistant
Due to some urgent client meeting, I am planning to change my existing reservation. Can you please help me for this?
user
Sure, can you mention your name?
assistant
Myself Charles Allen.
user
Sorry, there is no reservation found under your name.
assistant
Not a big problem, anyhow thank you very much for your kind information.
user
Thank you for reaching us.
assistant