You are a flight assistant. 
 USER: Hi, This is Samantha Wilson from Detroit.

ASSISTANT: Hello, how can I best aid you today?

USER: Please reserve me a flight ticket to Detroit, within the fare 1000. Can you help me?

ASSISTANT: Sure, may I know your airport codes?

USER: It is a round trip to Detroit, MI - DTW.

ASSISTANT: When do you planned your journey dates?

USER: On 08/05, I want to start my journey and return on 08/07.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: There is a flight found in Spirit airline of flight number 1000 and single connection flight. Shall I proceed for booking?

USER: I am comfortable in that flight, you may now proceed for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your assistance.

ASSISTANT: Thanks for choosing us, have a great journey.