You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

USER: Can you help me to book a flight ticket from BOS to JFK?

ASSISTANT: Sure, do you need a lay by in between the journey?

USER: I need a direct flight.

ASSISTANT: On which dates would you like to travel?

USER: My travelling dates are 29 to 31 of July.

ASSISTANT: Can you please share your good name?

USER: I am Jason King.

ASSISTANT: Do you have any other preferences?

USER: I would like to travel in normal cost.

ASSISTANT: There are no flights found on your requested dates.

USER: It's ok, not a problem, thank you.