You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in changing my recent reservation? As my planned trip has been postponed to some other dates.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Sure, my name is Edward Gonzalez.

ASSISTANT: Thank you for providing your name.

USER: It's alright.

ASSISTANT: I am sorry to inform you that, there is no reservation found on your name to change.

USER: Oh! I think the ticket was not booked due to server issue. Anyway, thank you for the information.

ASSISTANT: Thank you for approaching us.

USER: Welcome.