You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: I am trying to change my existing reservation because the planned trip got cancelled suddenly due to some financial issues in the family. Can you please help me in changing the ticket?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name for further process?

USER: Yes, I am Kenneth Jones.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is no previous reservation available in your name.

USER: Ok, not an issue. Anyway's thank you for your information.

ASSISTANT: Thank you for contacting us.