Hello.
user
Hello, how can I guide you for today?
assistant
Due to change in my plans to visit Dallas, I would like to change my existing reservation. Can you help me with this?
user
Sure, can you please provide your name?
assistant
My previous reservation has done with my name William Turner.
user
Please give me a minute, I will find your existing reservation.
assistant
Sure.
user
Sorry, there is no reservation found under your name.
assistant
Ok, not an issue. May be my friend has already changed my reservation. Thank you for providing information.
user
Thank you for availing us.
assistant