You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to visit Boston, will you help me in booking the flight ticket from IAH to BOS?

ASSISTANT: Sure, can you share your travel dates please?

USER: My travelling dates are Apr 12 and Apr 14.

ASSISTANT: May I know your good name please?

USER: Myself Samantha Thompson.

ASSISTANT: Please share your connection limit.

USER: I need a flight with single connection.

ASSISTANT: Do you have any other preferences?

USER: I would like to return in afternoon time.

ASSISTANT: Sorry, there is no flight service available on your required dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.