You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I assist you today?

USER: I want to change my existing reservation due to sudden change with my destination point. Can you help me out in changing my reservation?

ASSISTANT: Sure, may I know your good name?

USER: I am Sharon Lopez.

ASSISTANT: Please wait for a moment. I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to say that, no reservation was found with your name.

USER: Ok, not a problem. Thank you for quick response.

ASSISTANT: Thanks for connecting with us.