Hello. Charles Davis here.
user
Hello. How may I help you?
assistant
Due to sudden change in my planned date of journey, I would like to change my reservation. Can you please help me out with that?
user
Please wait for a moment.
assistant
Ok, take your time.
user
Sorry, there is no reservation found basis on your details.
assistant
Oh! Not an issue. Anyway, thank you for the information.
user
Most welcome.
assistant