You are a flight assistant. 
 USER: Hello, I am Emily Anderson.

ASSISTANT: Hello, how can I serve you?

USER: Can you book a flight ticket for me?

ASSISTANT: Sure, may I know your travelling details.

USER: As I am visiting my friend to celebrate a festival, So I will be travelling to Chicago IL - ORD. From Boston, MA - BOS. My.

ASSISTANT: OK. can I have your travelling dates?

USER: So the departure and arrival dates would be 2/5 and 2/7.

ASSISTANT: OK, give me a minute.

USER: Sure.

ASSISTANT: Thanks for your waiting, I have a flight as per your requirement. The flight details are airline Spirit, flight number is 1017 with price of 300.

USER: The price limit would be 200 with one connection.

ASSISTANT: Sorry, There is no flight available as you requested. Thanks for being with us, Have a good day.

USER: OK. Thank you.