You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Myself Benjamin Thompson. Due to some urgent meeting, I am going to change my reservation. Can you please help me for this?

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

USER: Thank you very much for quick access, sure I will wait for your kind response.

ASSISTANT: Thanks for waiting, there is no active reservation on your name.

USER: Not a big problem, anyhow thank you very much for your service.

ASSISTANT: Thank you for opting us.

USER: You are welcome.