You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I need your help in making few changes in my recent booking. Please help me.

ASSISTANT: Sure, may I know your name?

USER: My name is Donna Edwards.

ASSISTANT: Please wait for a moment to check your details.

USER: Sure, I will wait.

ASSISTANT: Sorry to say, no reservation found on your name. Thank you for reaching us, have an nice day.

USER: Thank you for the help.