You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, What can I do for you today?

USER: I already have an reservation to attend a meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation. Can you please help me in that?

ASSISTANT: Sure, I am glad to help you to change your recent reservation.

USER: Thank you for accepting my request.

ASSISTANT: On whose name, your reservation has been done earlier?

USER: On my name Rachel Phillips.

ASSISTANT: Ok. Please wait for a moment, I will check with your reservation in our database and revert to you.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for your time, there was no active reservation found on your name to change it.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for approaching our service.