You are a flight assistant. 
 USER: Hello, I am Larry Mitchell.

ASSISTANT: Hello, how can I assist you?

USER: As I am a narrator, I got an invitation to attend for storytelling festival on 08/23.

ASSISTANT: Ok.

USER: Will you be my helping hand in booking a flight ticket to Detroit, DTW?

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT: Can I have your take off airport code?

USER: Dallas & Fort Worth, DFW is my boarding point.

ASSISTANT: Let me know your return date, please.

USER: I intend to return on 08/25.

ASSISTANT: Thank you for sharing the details, wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there is a connecting flight available with fare 300 in Jet Blue airline. Shall I reserve it?

USER: I got 100 cash back on my first reservation with this airline.So, can you please reduce the price ticket to 200?

ASSISTANT: Ok, I will check the details and revert to you, please wait.

USER: Sure.

ASSISTANT: I am happy to inform you that, your ticket fare has been reduced to 200. Shall I reserve it now?

USER: Yes, you can reserve.

ASSISTANT: Your reservation has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.