Hi.
user
Hello.
assistant
I am Marry Hill.
user
How may I assist you at this moment?
assistant
Due to sudden change in my planned dates of journey, I would like to change my reservation. Can you please help me out with changing of my reservation?
user
Sure, I will help you with that.
assistant
Thank you.
user
Please wait a moment to check your previous reservation.
assistant
Sure, I will wait for your reply.
user
We regret to inform you that, there is no reservation on your name in our records.
assistant
No problem with that one, thank you for your assistance in providing your information.
user
Thank you for contacting us, have a great day.
assistant
Welcome.
user