You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nicole Collins.

ASSISTANT: How can I assist you?

USER: I want to book a ticket from DCA to BOS, can you help me?

ASSISTANT: Sure, I will help you with that. Can you please share me your travelling dates?

USER: My travel dates are 11/22 and 11/24.

ASSISTANT: Ok, do you need any halt in between journey?

USER: I need a single halt.

ASSISTANT: Is there any other specifications?

USER: I am comfortable with all flights.

ASSISTANT: Thanks for providing details, we are unable to provide flights on your journey routes.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for opting us.