You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: Can you please help me with booking a flight ticket from DCA to SEA?

ASSISTANT: Sure, let me know your travel dates please?

USER: My travel dates are Nov 08 and 10.

ASSISTANT: Ok, is there any class preference?

USER: I prefer business class.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any specific depart and arrival timings?

USER: I am comfortable with any timings.

ASSISTANT: Do you need any airline preference?

USER: I prefer normal cost airlines.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: Ok, can I know your name please to proceed further?

USER: My name is Anna Hill.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: OK, no issues. Thanks for the help.

ASSISTANT: Thanks for contacting us.