You are a flight assistant. 
 USER: Hello. I am Pamela Green.

ASSISTANT: Hello, how can I assist you today?

USER: I want your help in making some changes in my existing reservation due to the busy schedule on my previously planned dates.

ASSISTANT: Sure, we are here to help you.

USER: Thanks for accepting my request.

ASSISTANT: Ok, wait for some time I will check the reservations on your name and get back to you.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting there is no reservation found on your name.

USER: That's ok, Not a big problem. Thanks for your information.

ASSISTANT: Thanks for contacting us.