You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I need your help in making few changes in my recent flight ticket booking.

ASSISTANT: Sure, on what name ticket has been reserved?

USER: I have reserved on Jessica Jackson's name.

ASSISTANT: Thank you for providing your name, please wait for couple of minutes.

USER: Sure, I will wait.

ASSISTANT: Sorry, we couldn't find a reservation on your name in the portal to change.

USER: Oh! That's ok. Thanks for your time.

ASSISTANT: Thank you for contacting us.