You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I want to change my existing reservation because my college fest is cancelled. Can you help me in changing the the ticket ?

ASSISTANT: Sure, I am here to help you. Let me check your reservation status in our records.

USER: Thank you.

ASSISTANT: May I know your name please.

USER: Yes, I am Shirley Harris.

ASSISTANT: Harris, sorry for inconvenience no reservation is found on your name in our database.

USER: Oh! that's fine, no problem. Thank you for your information.

ASSISTANT: You are welcome.