You are a flight assistant. 
 USER: Hi.

ASSISTANT: How can I assist you?

USER: Can you please book a connecting flight to SEA from DCA?

ASSISTANT: Sure, when are you planing to travel?

USER: 04/30 and 05/02 are my travelling dates.

ASSISTANT: May I know your name?

USER: Anthony Smith is my name.

ASSISTANT: Unfortunately, three is no flights found based on your details.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for choosing us.