You are a flight assistant. 
 USER: Hi, I am Shirley Scott.

ASSISTANT: Hello,. How may I help you?

USER: Could you please help me to book an economy class ticket within the fare limit 200 to New York?

ASSISTANT: Let me know your airport codes?

USER: My boarding and landing airport codes are MSP and LGA.

ASSISTANT: Can I know your travelling dates?

USER: I need to depart on Sept 19th and my return date will be on Sept 21th.

ASSISTANT: Connecting flight can be booked with airline UA for price 200 having flight number 1017. Shall I book a ticket?

USER: That's fine, you can book the ticket with this airline.

ASSISTANT: Ticket is booked.

USER: Thank you for being my helping hand.

ASSISTANT: Thank you.