You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. May I know your good name?

USER: Yes, I'am Sandra Taylor. I want to book a flight, can you help me with that?

ASSISTANT: Sure, can you provide your journey details?

USER: Yes, My origin is Chicago, IL-ORD and destination is Boston, MA-BOS. And my travelling dates from Dec/10 to Dec/12.

ASSISTANT: OK, may I know your price limit?

USER: I prefer my price limit to be 200 with 1 connection.

ASSISTANT: OK, please wait a minute.

USER: OK.

ASSISTANT: Thanks for waiting, sorry to inform that no flight is found.

USER: OK, thank you for your information.

ASSISTANT: Thank you, for connecting with us.