Hello.
user
Hello, what can I do for you today?
assistant
I need to change my reservation as my plan to go for trekking got postponed. Can you help me?
user
Sure, I am here to help you.
assistant
Thank you.
user
Can you mention your name to check further in our database?
assistant
I am Dennis Mitchell.
user
Please stand by.
assistant
Sure.
user
 Sorry, no reservation found with your given name in our database to change it.
assistant
Ok fine, thanks for your response.
user
Thank you for contacting us and have a nice day.
assistant