You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I best render you today?

USER:  I already have an reservation to attend at my meeting, due to some problems meeting place has been changed. Can you help me in changing in reservation?

ASSISTANT: Sure, we are here to help you. Can you please provide me your good name please?

USER: I am Michelle Collins.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thanks for reaching us, have a good day.

USER: Thanks for your information.