You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight from Orlando to meet my parents. Can you book a flight for me?

ASSISTANT: Sure, can you share your journey dates?

USER: I will fly on Apr 29 and return on May 1st.

ASSISTANT: May I know your airport codes for booking?

USER: My source point is MCO and my destination is DTW.

ASSISTANT: Do you have any preferences?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Karen Garcia.

ASSISTANT: There is a direct flight with number 1012 in airline Spirit, the fare is 100 in economy class. Can I book it?

USER: Please proceed with booking.

ASSISTANT: Your ticket is reserved, the depart time is 12:00 PM and return time is 10:00 AM.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.