You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please help me in changing my reservation as I am my schedule got postponed?

ASSISTANT: Sure, I will help you with that, can I know your good name to proceed further?

USER: Thank you for considering my request. My name is Rachel Hill.

ASSISTANT: Please wait for some time.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry for the trouble which is caused to you Rachel Hill, I have not found any reservation on your name in our database.

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

ASSISTANT: Thank you for reaching us.