You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need to do some modifications in my existing reservation, can you help me out?

ASSISTANT: Sure, please tell me your good name.

USER: Myself Jennifer Campbell.

ASSISTANT: Please wait, I will get back to you.

USER: Take your own time.

ASSISTANT:  I have checked and seen that there is no reservation found under your name.

USER: That's ok, no problem.

ASSISTANT: Thank you so much.

USER: Thank you for checking my reservation details.

ASSISTANT: Most welcome.