You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am James Turner want to change my reservation owing an emergency meeting. Can you help me in changing my reservation?

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

USER: Ok.

ASSISTANT: Thanks for waiting. Sorry, there was no reservation found on your name.

USER: Ok, no issues. Thank you for your response.

ASSISTANT: Thank you for choosing us.