Hello.
user
Hello. How may I help you?
assistant
Myself David Evans. Due to some urgent client meeting, I am going to change my existing reservation. Can you please help me in changing the reservation?
user
Sure, please wait a moment.
assistant
Sure, I will wait for your response.
user
Sorry, there is no reservation found under your name.
assistant
Not a big deal, anyhow thank you very much for your service.
user
Most welcome.
assistant