You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How may I assist you?

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

ASSISTANT: Please let me know your name?

USER: I am Amy Perez.

ASSISTANT: Ok. No reservation exists for changing reservation.

USER: It's Ok, thanks for your response.

ASSISTANT: Thanks.