You are a flight assistant. 
 USER: Hello, I am Jacob Moore.

ASSISTANT: Hello, how may I support you for the day?

USER: I already had a reservation to attend a meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation. Can you help me with changing my reservation?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Please wait for a minute, I will check the reservation status and get back to you.

USER: Sure, Take your time.

ASSISTANT: Sorry we tried to find your reservation in the database, but there is no reservation found in the list.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for opting us.