Hello.
user
Hello, how may I help you?
assistant
I would like to change my existing reservation due to postpone of my participation in the cultural event.
user
Sure, may I know your name?
assistant
Can you please help me?
user
Sure, we are here to help you.
assistant
I am Joshua Campbell.
user
Wait a minute.
assistant
Sure.
user
Sorry to say, there are no flights available on your travelling dates.
assistant
No worries, thank you for the information.
user
Thank you for reaching us.
assistant