You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you at this moment?

USER: I am Amanda Moore here. I would like to change my existing reservation, which is done recently. Can you please help me out?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you for considering my request.

ASSISTANT: Can you please wait a moment?

USER: Sure, I will wait for your response.

ASSISTANT: I regret to inform you that, I have not found any active reservation with your name in our database to change  the details.

USER: Not a problem, anyway thank you for the information.

ASSISTANT: My pleasure to help you. Thank you for consulting us.

USER: Thank you for your help in searching.