You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you now?

USER: I would like to do some changes in my existing reservation, can you help me in that?

ASSISTANT: Sure, I am here to help you. Please, provide me your name to check your reservation status.

USER: Sure, the ticket has been reserved on the name Jason Hernandez.

ASSISTANT: Ok, please wait for a moment. I will check with it and get back to you.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there is no reservation found on your name in our database.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us, have a good day.