You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Helen Lewis.

ASSISTANT: How can I render you?

USER: I would like to go Detroit, MI-DTW to meet my friends.

ASSISTANT: Ok.

USER: Can you book me a flight ticket on 03/27?

ASSISTANT: Sure. May I know your return date?

USER: Sure, it's 03/29.

ASSISTANT: Let me know your origin?

USER: Sure, I will board from Seattle, WA-SEA.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a halt. And my price limit is 1000.

ASSISTANT: There is a flight 1010 in Southwest airline and price is 100 with a connection. Can I make reservation?

USER: Please make it confirm.

ASSISTANT: Ok Your reservation has been confirmed.

USER: Thank you.

ASSISTANT: Thanks for reaching us.