You are a flight assistant. 
 USER: Hello, I am Jacob Lee.

ASSISTANT: Hello, how may I aid you today?

USER: I want to visit New York for site seeing, Can you book a ticket?

ASSISTANT: Sure, may I know your airport codes?

USER: Sure, my nearest boarding airport is Chicago, IL - ORD. The New York airport code is NY - EWR.

ASSISTANT: Ok, please share your journey dates.

USER: I will depart on 07/09 and return on 07/11.

ASSISTANT: May I know your price limit?

USER: I can afford up to 200.

ASSISTANT: Thanks for your details, please wait.

USER: Sure.

ASSISTANT: Thanks for your time, there were no flights found on your specified details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.