You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I am planning to change my travelling dates, so can you help me to change my reservation?

ASSISTANT: Sure, i will help you in changing, please hold on for a moment to check your reservation status. May I know your name please?

USER: My name is Catherine Moore.

ASSISTANT: Moore, I did not find any active reservation with your name in my database.

USER: Ok, thank you for your time.

ASSISTANT: It's my pleasure.