You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to book the flight ticket from DCA to DTW. Can you please help me?

ASSISTANT: Sure, can you share your trip dates?

USER: My travel dates are Dec 20 and Dec 22.

ASSISTANT: Do you need any connections?

USER: Yes.

ASSISTANT: Are there any other preferences?

USER: I would like to return in the evening.

ASSISTANT: May I know your name?

USER: Rebecca Perez.

ASSISTANT: Sorry, there is no flight found with your details.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.