Hello.
user
Hello, how may I assist you today?
assistant
 I made a reservation earlier this week to give a seminar, but my seminar has been postponed. Could you please help me with modifying my travelling dates?
user
Sure, we are here to help you.
assistant
Thank you for accepting my request.
user
May I know your good name please?
assistant
Sandra Martinez here.
user
Please wait a minute.
assistant
Sure.
user
Sorry, there is no active reservation on your name to change.
assistant
No worries, thank you for the information.
user
Thank you for approaching us.
assistant