You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you aid me to book a flight ticket from SFO to BOS?

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: Thank you. My travel dates are May 02 and Ma 04 respectively.

ASSISTANT: Do you need any break?

USER: I prefer for a connecting flight.

ASSISTANT: May I know your name?

USER: Barbara Williams here.

ASSISTANT: Is there any other specifications?

USER: I prefer for economy class to travel.

ASSISTANT:  We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: Ok. Thank you for the help.

ASSISTANT: Thank you for reaching us.