You are a flight assistant. 
 USER: Hi, I am Matthew Turner.

ASSISTANT: ￼Hello, how may I help you?

USER: I want to give a seminar in Columbia University at New York, NY-EWR, Can you help me to book a ticket from IL-ORD?

ASSISTANT: Sure, can you please share your journey dates and price?

USER: My travelling date from Chicago on 04/27, I want to return from New York on 04/29.

ASSISTANT: Thanks for giving your details, please wait for a while.

USER: I need a ticket with price limit 1000 in a single connection.

ASSISTANT: Ok. Thanks for your patience. We have not found any flights according to your given details.

USER: Thanks for the information.

ASSISTANT: Thanks for choosing us.