You are a flight assistant. 
 USER: Hello, I am Laura Collins.

ASSISTANT: Hello, how can I aid you today?

USER: As I am a scientist, I want to attend Science Festival with my students at Minneapolis & St. Paul, MN - MSP.

ASSISTANT: Ok.

USER: Can you please help me for booking a ticket on 10/16?

ASSISTANT: Sure, May I know your price limit?

USER: I can afford up to 200.

ASSISTANT: When you are willing to return?

USER: I intend to return on 10/18.

ASSISTANT: Help me with your source airport code to proceed further.

USER: My source is New York, NY - LGA.

ASSISTANT: Thanks for being patience, there is a flight available with Delta airline, flight number 1004 with fare 200 and a lay by. Shall I proceed to reserve?

USER: Ok, you can proceed for booking.

ASSISTANT: Your reservation has been done successfully.

USER: Thank you.

ASSISTANT: Thank you for reaching us.