Hello.
user
How can I provide assistance to you?
assistant
I would like to change my flight reservation as my trip got postponed, can you please help me?
user
Sure, I am here to help you with that, can I know your good name to proceed further?
assistant
I am Charles Walker.
user
Please wait.
assistant
Sure, take your time.
user
 I am very sorry to inform you that there is no reservation found under your name in our database.
assistant
Ok, not an issue.
user
Thank you for choosing us.
assistant
Thank you for the information.
user