You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: There is no reservation on your name.

USER: Not an issue.

ASSISTANT: Thank you.

USER: Thank you.