You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you at this moment?

USER: Can you please help me in booking my flight ticket from BOS to SFO?

ASSISTANT: On which dates would you like to travel?

USER: My travelling dates are Nov 28 and Nov 30.

ASSISTANT: Do you prefer economy or business class?

USER: I am comfortable in any class.

ASSISTANT: Do you need a lay by in between the journey?

USER: I need direct flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Can you please tell me your good name?

USER: Myself Anna Thompson.

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

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.