You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any assistance from us?

USER: I am planning to visit a Lincoln Memorial in DCA from SEA. Can you find a ticket for me?

ASSISTANT: Sure, when would you like to travel?

USER: Sure, my preferable dates are 02/20 to 02/22.

ASSISTANT: Can you provide your name please?

USER: Yes, I am Paul Hill. Make sure that the connection limit is 1.

ASSISTANT: Ok. Based on your data, I haven't found any flights to your route.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for connecting with us.