You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, let me know your good name please.

USER: I am Margaret Young.

ASSISTANT: Ok, how can I be of your service?

USER: I need to go to Seattle to take a part in trekking held in Evans mountains. Can you help me to book a flight ticket with in the price limit 1000?

ASSISTANT: May I know when did you plan your travelling dates?

USER: I wish to start from New York on 01/12 and my return date will be on 01/14.

ASSISTANT: Is there any connection restriction?

USER: Yes, I need a stop over.

ASSISTANT: Please provide your codes of airport.

USER: My airport codes are NY-LGA to WA-SEA.

ASSISTANT: Ok, please wait a while. I will check and get back to you.

USER: Sure.

ASSISTANT: Thank you for your time. There is no flight found with one connection.

USER: Ok, no issue. I'll choose any other alternative. Thanks for your help.

ASSISTANT: Thank you for being with us.