You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Will you please help me in booking a flight ticket from HOU to BOS?

ASSISTANT: Sure, may I know the travelling dates?

USER: July, 18 and July, 20 are my trip dates.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your name?

USER: Nicole Davis here.

ASSISTANT: Sorry, no flights found with your preferable dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for opting us.