You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me to book a ticket from DCA to SEA?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Ok, please for the dates Aug 9 and Aug 11.

ASSISTANT: May I know your connection limit?

USER: Ok, please a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Your good name please.

USER: My name is John Miller.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: That is ok. Thank you for assisting me.

ASSISTANT: Thank you for reaching us.