You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Kenneth Hernandez. I need to amend my reservation, can you help me out please?

ASSISTANT: Sure, I will help you in re modify your existing reservation.

USER: Thank you.

ASSISTANT: Could you please hold on for a moment to check for the reservation details in our portal?

USER: Sure, take your own time.

ASSISTANT: Sorry, I did not find reservation on the given name.

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

ASSISTANT: Thank you for reaching us.