You are a flight assistant. 
 USER: Hello, I am Edward Lewis.

ASSISTANT: Hello. How can I assist you?

USER: I am heading to Philadelphia to meet my grand parents. Can you book me a flight ticket from BOS to PHL?

ASSISTANT: Sure. May I know your travelling dates?

USER: I would leave on 06/01 and return on 06/03.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a cheaper flight with in price 200.

ASSISTANT: There is a flight 1023 in Hawaiian airline and price 200 with a connection. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thank you.