You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Helen Lewis. I am planning to meet my colleague in Chicago, can you help me in booking a flight ticket within a price limit of 200?

ASSISTANT: Sure, please share your boarding and landing airport codes?

USER: My source and destination airport codes are NY - LGA, IL - ORD.

ASSISTANT: Ok, let me know your planned trip dates?

USER: I will start on 10/26, return on 10/28.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, flight- 1012, airline- Delta, price- 100 with connection-1 matches your requested details. Shall I proceed?

USER: You can reserve it.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for booking a flight ticket.

ASSISTANT: Thank you for connecting with us.