You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Betty Hill.

ASSISTANT: How shall I amend you at this moment?

USER: I want to book a flight ticket to Boston to overview the city on 05/15. Can you help me for booking with a fare of 200?

ASSISTANT: Sure, I am glad to help you. On which date you will return?

USER: Ok, I will come back on 05/17.

ASSISTANT: From which place you would like to start your journey?

USER: Sure, I am heading from New York, NY - EWR.

ASSISTANT: Any connection limit?

USER: Yes, I need a halt.

ASSISTANT: What is your destination code?

USER: My destination airport code is MA - BOS.

ASSISTANT: Please wait a while. Thanks for waiting.

USER: Sure.

ASSISTANT: Unfortunately, we have no flights with your information.

USER: Ok, no problem. Thanks for your help.

ASSISTANT: Thank you for connecting us.