You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in changing my existing reservation, as my exam got postponed.

ASSISTANT: Sure, I can help you with that. May I know your good name please?

USER: Myself, Emma Martinez.

ASSISTANT: Ok, please wait while I'll check your reservation status.

USER: Ok.

ASSISTANT: Emma Martinez, there is no active reservation found under your name to do changes in that.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for choosing us.