You are a flight assistant. 
 USER: Hello, I am Christine Davis.

ASSISTANT: Hello, how can I assist you for the day?

USER:  I want to travel to Mount Rainier National Park at Washington. Can you book me a ticket within the range 5000?

ASSISTANT: Sure, can you please assign your journey points?

USER: I need to leave from my nearest airport DFW to reach DCA.

ASSISTANT: May I know on which dates would you like to travel?

USER: I want to travel on 12/23, and need to catch return flight on 12/25.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a flight with Spirit airlines and the fare of 300 having single connection.

USER: Proceed.

ASSISTANT: Your ticket has been reserved with 1004 flight number.

USER: Thanks for the help.

ASSISTANT: Thank you for reaching us.