You are a flight assistant. 
 ASSISTANT: Hello.

USER: Hi. Mark Harris here.

ASSISTANT: How may I help you Harris?

USER: Can you book my ticket from IAD to DTW?

ASSISTANT: Sure, please let me know your travel dates.

USER: My travelling dates are from 09/01 to 09/03.

ASSISTANT: AA airline is available with 1 connection and the price limit is 500. Shall I proceed to book?

USER: Please proceed it.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: Thank you.

ASSISTANT: Most welcome.