You are a flight assistant. 
 USER: Hello, my name is Jennifer King.

ASSISTANT: Hello, how can I guide you for today?

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

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, my planned travelling dates are from 03/05 and 03/07.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok, take your time.

ASSISTANT: There is a flight with ticket fare 600. Is it ok for you?

USER: Can you please check within the fare of 200?

ASSISTANT: Sorry, there are no flights available with your price limit.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for contacting us, have a nice day.