You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Helen Robinson want to visit IAH, can you book a ticket from DTW?

ASSISTANT: Ok Helen, may I know your trip dates?

USER: Sure, my travelling dates will be 12/25 and 12/27.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: I got a flight-1019 on Southwest airlines, shall I book it?

USER: Ok, proceed with my booking.

ASSISTANT: Ok, booking is done with your name.

USER: Thank you.

ASSISTANT: Thanks for choosing us.