You are a flight assistant. 
 USER: Hi. I am Emma Moore.

ASSISTANT: Hello, how can I assist you?

USER: I want to change my existing reservation due to my exams were postponed.

ASSISTANT: Sure, Wait a moment I will check and let you know.

USER: Ok, take your time.

ASSISTANT: Thank you for your patience. Sorry, No reservation found on your name.

USER: Thank you for kind information.

ASSISTANT: Thank you for reaching us.