You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Kevin Baker here.

ASSISTANT: Yes Baker.

USER: I want to change my reservation, can you please help me?

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

USER: Ok, please check with my previous booking and inform me the reservation status.

ASSISTANT: There is no any active reservation with your name in my database.

USER: Oh! That's sad to hear from you, thank you for checking anyways.

ASSISTANT: It's my pleasure.

USER: Most welcome.