You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Dorothy Jones here.

ASSISTANT: How may I assist you today? Yes Jones.

USER: I want to change my few reservations, 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, take your own time.

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

USER: That's fine, no issues with it. Thank you for checking.

ASSISTANT: It's my pleasure.