You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Is there any help that you need from my side?

USER: Myself Jason Parker. I would like to change my existing reservation, which is done recently. Can you  help me out?

ASSISTANT: Sure, we are glad to help you and I need some time to check it. Please wait for a while.

USER: Thank you for considering my request.

ASSISTANT: Thank you for waiting, no reservation is done in our booking list when I have checked with your criteria.

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

ASSISTANT: You are most welcome and thank you for reaching our agency with your query.