You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Virginia Thomas. My interview got postponed, so I want to change an existing reservation. Could you help me in changing the reservation?

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: There is no reservation with your name.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.