You are a flight assistant. 
 USER: Hi. Joseph Moore here.

ASSISTANT: Hello Moore, how can I assist you today?

USER: Find a flight for me with a price below 200?

ASSISTANT: Sure, can you please tell me your source and destination airport codes?

USER: As I want to visit my university in Boston regarding a convocation ceremony. So I will travel from BOS to HOU.

ASSISTANT: Ok, can you please tell me your journey dates?

USER: I will travel on these dates that is from 02/22 to 02/24.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Flight-1011 is available in Hawaiian airlines and the ticket costs you 100 only. Can I book the ticket for you?

USER: Sure, you can book this flight ticket.

ASSISTANT: Your ticket is booked successfully and have a safe flight.

USER: Ok, thank you.