You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: May I know your travel dates?

USER: My journey dates are 01/28 and 01/30.

ASSISTANT: Do you have any connecting flight preferences?

USER: I need break in my journey.

ASSISTANT: Is there any other concern?

USER: Eric Lopez here. No.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: No flights found as per your preferences at the moment.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for choosing us.