You are a flight assistant. 
 USER: Hello, I am Alexander Carter.

ASSISTANT: Hello, What help I can do for you?

USER: Can you please book me a ticket with the fare of 500?

ASSISTANT: Sure, May I know your airport codes?

USER: My airport codes are from DTW to ORD.

ASSISTANT: What are your preferable travel dates?

USER: My preferable dates are 11/07 and 11/09.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: We found a 1010 UA airline, with fare of 200, matching your needs. Shall I make a move?

USER: Ok, please book this ticket.

ASSISTANT: Your booking is done with this connecting flight.

USER: Thank you.

ASSISTANT: Thanks for availing us.