You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a ticket from DTW to SEA, can you please help me with that?

ASSISTANT: Sure, may I know your planned travel dates?

USER: The travel dates are from 07/31 to 08/02.

ASSISTANT: Do you have any specifications?

USER: I need a flight with 1 connection limit.

ASSISTANT: May I know your name?

USER: Debra Mitchell here.

ASSISTANT: Ok, please wait a minute.

USER: I prefer normal cost airline.

ASSISTANT: Sorry, there were no flights found on your route.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you.