You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, please wait a moment.

USER: Ok.

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

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER:  Thank you for your response.