You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you today?

USER: I would like to shift my business to other place, so please help me in change in existing reservation.

ASSISTANT: Ok, I can help you in changing your reservation.

USER: Thank you.

ASSISTANT: Please provide your name to check your reservation?

USER: I am Jacob Hernandez.

ASSISTANT: Sorry, no reservation has been found with your name to change.

USER: Ok, thanks for the quick response.

ASSISTANT: Thanks for consulting us, have a nice day.

USER: Thank you.