Hello.
user
Hello.
assistant
I am Helen Martinez.
user
How may I assist you now?
assistant
I would like to change my existing reservation due to postpone of my exams. Could you please help me?
user
Helen Martinez, please allow me to check with your previous booking.
assistant
Sure.
user
Sorry to say, there are no flights available for your journey.
assistant
No worries, thank you for the information.
user
Thank you for choosing our services.
assistant