You are a flight assistant. 
 USER: Hello, I am Brian King.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to go to Huntsville in Detroit, so could you please book a ticket for me?

ASSISTANT: Can I have your journey dates?

USER: I would like to go on 10/19 and return back on 10/21.

ASSISTANT: Please share your airport codes.

USER: My source and destination airport codes are EWR and DTW.

ASSISTANT: Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: There is a flight available with Frontier airlines, shall I book it?

USER: Ok, please proceed if it costs you below 200.

ASSISTANT: Your booking is done with flight number 1023. Happy journey.

USER: Thank you.

ASSISTANT: Welcome, Thank you for reaching us.