You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I abet you today?

USER: I am Jacob Thomas. Help me to change my reservation, as I want to change my travelling date. Can you help me with that?

ASSISTANT: Sure, please wait for a moment, I will check the reservation on your name and revert to you.

USER: Ok.

ASSISTANT: Thank you for your time. I apologise that there is no reservation found on the given name.

USER: Thank you for the information.

ASSISTANT: Thank you for making us as your assistance.