You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER:  I made a reservation earlier to give a seminar but due to some technical issues, I need to change my reservation. Can you help me in that?

ASSISTANT: Sure, we will help you. May I know your name please?

USER: I am Kathleen Carter.

ASSISTANT: Ok, can you please wait for a moment, I will check with your reservation.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting. Sorry we couldn't find any reservation on your name.

USER: Ok, no issue.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thank you for your response.