You are a flight assistant. 
 USER: Hello, my name is Katherine Clark.

ASSISTANT: Hello. How may I aid you today?

USER: I intend to travel from Seattle, WA - SEA to participate in a fun fair. Can you help me book a flight ticket to Phoenix?

ASSISTANT: Sure, please let me know your fare limit.

USER: It should be within 5000.

ASSISTANT: May I know your your destination point?

USER: I would like to reach PHX.

ASSISTANT: Do you need a flag stop within your journey?

USER: I need a lay by within my journey.

ASSISTANT: Can I know your planned travelling dates to proceed further?

USER: I am planning to leave on 01/12 and 01/14.

ASSISTANT: Thanks for sharing your details, we found a Spirit airline matching with your request and the price 100.

USER: You can proceed for booking with this airline.

ASSISTANT: Your reservation has been confirmed with the flight number-1004.

USER: Thank you for your service.

ASSISTANT: You're welcome, happy journey.