You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Christopher Johnson.

ASSISTANT: Ok.

USER: I am looking for a flight travelling agency to book a flight ticket from DCA to HOU, can you please help me in booking the ticket for me?

ASSISTANT: Sure, I am here to help you. May I know your travelling dates for booking your ticket?

USER: Sure, I probably planned my trip dates to depart on 10/11 and return back on 10/13.

ASSISTANT: Spirit airline is providing a direct flight with a fare of 100. Shall I proceed with this booking?

USER: Sorry, I need a flight with 1 connection.

ASSISTANT: Ok, please hold for a moment.

USER: Sure.

ASSISTANT: Sorry to say, there is no connecting flight to book your ticket.

USER: It's ok, thank you.

ASSISTANT: You are welcome, thank you for reaching us.