You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be of your help?

USER: I am Stephen Baker. I would like to cancel my reservation due to my exams schedule were changed. Can you help me out?

ASSISTANT: Sure, please wait a while. I will check and get back to you.

USER: Ok, take your time.

ASSISTANT: Thank you for being wait. Unfortunately we didn't found any reservation with your name.

USER: Not an issue. Thank you for your information.

ASSISTANT: Thank you for your response.