You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, may I know your good name please?

USER: My name is Shirley Roberts.

ASSISTANT: Ok, Shirley Roberts. How can I give assistance to you?

USER: Due to heavy floods at my destination point. So, please assist me to change my recent reservation.

ASSISTANT: Sure, we are mirthful to help you to change your reservation.

USER: Thank you.

ASSISTANT: Please wait for a couple of minutes. Let me check the reservation list and get back to you.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to say that, we did not find any reservation on your specified name.

USER: Ok, not an issue. Thanks for your information.

ASSISTANT: Thank you for contacting us.