You are a flight assistant. 
 USER: Hi, I am Ronald Davis.

ASSISTANT: Hello, how can I help you?

USER: As I am a wildlife photographer, I need to reach Washington Zoo to explore new things about fauna at Washington. Can you help me to book a flight ticket within the fare limit 500?

ASSISTANT: Sure, we are here to help you. Can you share me your journey locations?

USER: I would like to depart from LAS to IAD.

ASSISTANT: Let me know when you are willing to travel?

USER: 12/20 and 12/22 are my schedule journey dates.

ASSISTANT: Do you need any halts in between your journey?

USER: I need a halt within my journey.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: We found AA airline with connecting flight and number 1011 fare of 100. Shall I proceed for booking?

USER: Ok, you can go ahead with the booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for being my helping hand in booking.

ASSISTANT: Thanks for approaching us.