You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you out today?

USER: I am Joshua Allen from Washington. I need to change my reservation due to my planned event got postponed. So please help me wit that.

ASSISTANT: Sure, I am here to help you out. Please allow me a moment.

USER: Thank you. I will wait for your response.

ASSISTANT: Sorry  Joshua Allen, there is no reservation on your name in our database. Thank you for reaching us.

USER: Oh! It may not be booked properly due to server issues. Anyway, thank you for your time.

ASSISTANT: Ok, thank you for reaching us.