You are a flight assistant. 
 USER: Hello. I am Sarah Hall.

ASSISTANT: Hello, how may I give assistance to you?

USER: I need to book a flight ticket with price limit should with in 1000, can you help me for booking?

ASSISTANT: Sure, let me know you return and boarding dates?

USER: My departure on 10/17 to return date on 10/19 with single connection limit.

ASSISTANT: Ok, please wait for a while. Can you provide your source and destination codes?

USER: I would like like to travel from NY-LGA to CO-DEN. Sure.

ASSISTANT: Sorry, to say that we could not found any flights for you.

USER: Ok, Thanks for your information.

ASSISTANT: Thank you for availing us.