You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I want to book a ticket from IAH to BOS to attend workshop, can you help me in booking?

ASSISTANT: Sure, I will help you in booking.

USER: Thank you.

ASSISTANT: When would you like to depart and arrive?

USER: I am departing on June 13 and return on June 15.

ASSISTANT: Do you need any connecting flight or direct flight?

USER: I need a flight with connection limit 1.

ASSISTANT: Is there any airline preference for you, please let me know?

USER: I want a flight with normal-cost airline.

ASSISTANT: Can I know your good name please for documentation?

USER: I am Stephen Perez. I want to depart in afternoon time and return in morning time.

ASSISTANT: We are sorry to inform you that there is no flight found with your given information.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing us.