You are a flight assistant. 
 USER: Hello,.

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

USER: I got an invitation for a movie launch ceremony, please book me a direct flight to Detroit, MI- DTW.

ASSISTANT: Ok, may I know your source details?

USER: I want to fly from CA- OAK.

ASSISTANT: Is there any price limit you needed?

USER: My ticket should be within price 500.

ASSISTANT: Can you share your dates of journey?

USER: My travelling dates are from 05/03 to 05/05.

ASSISTANT: Thank you.

USER: Ok, no problem.

ASSISTANT: Please hold on, I will check the availability and revert you.

USER: Sure, take your time.

ASSISTANT: Thanks for your time. Unfortunately there are no flights available at this moment.

USER: That's fine. no issues.

ASSISTANT: May I know your name?

USER: I am Edward Anderson.

ASSISTANT: Thank you for reaching us.

USER: Thank you.