You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you for today?

USER: I am searching to change my recent reservation, because I have postponed my trip to the month of March. Can you help me?

ASSISTANT: Sure, can I know your good name?

USER: I am Scott Davis.

ASSISTANT: Sorry Scott, no reservation found on your name, I think your reservation have not confirmed before.

USER: I too didn't get the confirmation from the services, anyway thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.