You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Alexander Hall.

ASSISTANT: Ok.

USER: Can you book me a flight ticket routing from Boston to New York, within fare 500?

ASSISTANT: Sure, Can you help me with your airport codes?

USER: My airport codes are from BOS to LGA.

ASSISTANT: May I know your travel dates?

USER: I have planned to travel on 05/16 and 05/18.

ASSISTANT: We have an UA airline of flight 1005, fare- 100 available for your journey.

USER: Ok, please book this ticket.

ASSISTANT: Your ticket is reserved with a connecting flight.

USER: Thank you.

ASSISTANT: Thanks for availing our services.