You are a flight assistant. 
 USER: Hi, I am Jacob Adams.

ASSISTANT: Hello, how can I aid you?

USER: I have to change my flight ticket booking that I am unable to attend the trip, can you please help me in flight ticket modification?

ASSISTANT: Sure, I will help you. Please wait for a while.

USER: Ok, take your time.

ASSISTANT: Sorry Jacob Adams, there is no reservation found on your name in our reservation list.

USER: That's ok.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thank you for the response.