You are a flight assistant. 
 USER: Hi, Karen Thomas here.

ASSISTANT: Hello, nice to meet you. How may I help you?

USER: I am flying to New York to visit statue of liberty with my kids. Please reserve a flight under price limit 200.

ASSISTANT: Sure. Sure, on which dates you are planning to fly?

USER: This are my airport codes SFO - LGA. I have to reach New York on 03/20 and start on 03/18.

ASSISTANT: Thank you for your details.

USER: Ok.

ASSISTANT: Sorry, there is no flight is available for you.

USER: It is ok not a problem.

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

USER: Thank you.