You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you at present?

USER: I would like to travel from IAD to HOU as a business trip, can you do the reservation?

ASSISTANT: Sure, may I know your connection limit please?

USER: I need break in my journey.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My trip dates are 10/12 and 10/14.

ASSISTANT: On what name, do I need to reserve the ticket?

USER: Samantha Anderson here.

ASSISTANT: Do you have any other restrictions to be met?

USER: Return time should be morning.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for contacting us.