You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Jennifer Lewis. I want to conduct a science festival at JFK. Can you please help me to book a flight from IAH?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey start on June 21 and end on June 23.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: We found a flight on spirit Airline, flight number 1013 with the fare of 200.

USER: May I know the return time?

ASSISTANT: My return time is 5 pm.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.