You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Debra Wright this side, I am going to host a party at New York, can you help me to book a ticket?

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

USER: Search the flights from MCO to LGA.

ASSISTANT: Noted, can you provide me your travel dates?

USER: I am looking to start on 11/16 and return on 11/18.

ASSISTANT: Noted, please wait for a while.

USER: Ensure that connection limit is 1.

ASSISTANT: Thank you for waiting, there is a flight in Delta airlines with 1 connection and ticket costs you 300 only. Can I book your ticket?

USER: No, please check for the flights which cost's only 200.

ASSISTANT: Sorry Debra, there are no flights available with ticket fare 200.

USER: Ok, that's fine, thank you for your support.

ASSISTANT: Thank you for contacting us, have a nice day.