You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Due to some technical issues, my meeting place has been changed. Can you please change my existing reservation?

ASSISTANT: Sure, I am glad to help you. On whose name, you have reserved the ticket?

USER: Please check the reservation on the name of Jacob Hill.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation was found on your name to change.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for choosing us.