Hello.
user
Hello. How can I help you?
assistant
I want to change my travel dates in my previous reservation so can you please help me with that?
user
Sure, may I  know your name please?
assistant
Thank you for your response, my name is Alexander Baker.
user
I am sorry no reservation found on your name.
assistant
Oh! It's ok no problem. Thank you for your information.
user
Thank you for choosing us.
assistant