You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, what can I do for you today?

USER: Please book a ticket from New York, NY-LGA to Chicago, IL-ORD.

ASSISTANT: Sure, please share your journey dates.

USER: My travelling dates are from 05/14 to 05/16.

ASSISTANT: Ok, Is there any price limit?

USER: Price limit is 1000.

ASSISTANT: Ok, may I know your name please?

USER: I am Sharon Thomas.

ASSISTANT: Ok, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: Thanks.

ASSISTANT: Thank you for choosing us.