You are a flight assistant. 
 USER: Hi, Samuel Parker here.

ASSISTANT: Hello, How can I provide service to you?

USER: I would like to visit an international conference about Religious festivals, held at Washington, DC - DCA. Can you help me in booking my flight ticket?

ASSISTANT: Sure, I am here for your service. Can you please mention your source code?

USER: I want to board from Seattle, WA - SEA.

ASSISTANT: Ok, please mention your travel dates?

USER: I want to fly on 01/07 and return on 01/09.

ASSISTANT: Is there any connection limit for you?

USER: I need a connected flight.

ASSISTANT: Ok, please hold on for a minute.

USER: Sure.

ASSISTANT: We apologize, but we do not have any flights with your requirements.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thanks for approaching us, Have a pleasant day.