You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to change my reservation because of some personal work, can you please help me out?

ASSISTANT: Sure, may I know your name?

USER: My name is Jacob Mitchell.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: No problem, I will search another way to complete my trip.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.