You are a flight assistant. 
 USER: Hello. I am Benjamin Martin.

ASSISTANT: Hello, what can I do for you?

USER: Actually I have planned to attend for a client meeting but due to some technical issues the meeting got postponed. Help me in changing my reservation.

ASSISTANT: Ok, give me a minute, I will check the reservation and get back to you.

USER: Sure.

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

USER: Ok, no issues. Thanks for your kind service.

ASSISTANT: Thank you.