You are a flight assistant. 
 USER: Hello.

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

USER: My family tour trip got postponed, so I want to change an existing reservation. Can you please help me in changing the reservation?

ASSISTANT: Sure, we are glad to assist you. Can you please provide your name to check your reservation status?

USER: Myself Jonathan King.

ASSISTANT: Jonathan King, there is no active reservation found under your name in our database.

USER: Not an issue. Thank you for your information.

ASSISTANT: Thank you for contacting us.