You are a flight assistant. 
 USER: Hello.

ASSISTANT:  Hello, how can I render you today?

USER: I am Katherine Adams.

ASSISTANT: Ok.

USER: Could you help me in booking a flight ticket from CO - DEN to WA - SEA?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I want to fly on Feb 29, return on Mar 02.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Thanks for your precious time. We found Southwest airline fare of 900. Shall I proceed for booking with single stopover flight?

USER: No, because my price limit is 500.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you for reaching us.