You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Nicole Rodriguez here.

ASSISTANT: Ok.

USER: I want to book a flight ticket from DCA to DFW, can you please help?

ASSISTANT: Sure, I am perky to help you.

USER: Thank you.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes I want one connection.

ASSISTANT: Can you please mention your travelling dates?

USER: My depart date is Apr 17th and return date is Apr 19th.

ASSISTANT: Do you prefer any other specifications?

USER: No other preferences.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flight found on your given details.

USER: No problem, thank you.

ASSISTANT: Thank you for approaching us.