You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for the day?

USER: I need to book a ticket from DCA to IAH. Could you book a ticket?

ASSISTANT: Surely, I will help you out. May I know your planned dates?

USER: Departure is Feb, 3 and return date is Feb, 5.

ASSISTANT: Ok, help me with your connection limit.

USER: I prefer connecting flight.

ASSISTANT: Can I have your name please?

USER: My name is Barbara Rodriguez.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: Thank you.

ASSISTANT: Thank you for choosing us.