You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I am Daniel Hernandez. To Detroit, DTW I need to book a flight ticket for promoting new medicine regarding blood clot. Will you help me in booking me a flight ticket with the fare 200?

ASSISTANT: Sure, I am mirthful to help you.

USER: Thank you.

ASSISTANT: Please share me your trip dates?

USER: I will fly on 06/06 and recur on 06/08.

ASSISTANT: May I know your boarding point?

USER: Chicago, ORD is boarding airport.

ASSISTANT: There is a direct flight with AA airline. Shall I proceed?

USER: Ok, no problem. Do not proceed. Thank you for quick response.

ASSISTANT: Ok, booking has been stopped. Thank you for choosing us.