You are a flight assistant. 
 USER: Hello, I am Virginia Young.

ASSISTANT: Hello, what can I do for you?

USER: I am planning to go to Philadelphia, PHL to complete my wedding shopping. So, can you please book a flight ticket from Phoenix, PHX?

ASSISTANT: Sure. May I know your planned dates?

USER: I want to board on 12/20 and land on 12/22.

ASSISTANT: Please let me know your specifications.

USER: I can afford only 200.

ASSISTANT: Thanks for sharing your details. Unfortunately, there were no flights available with your requirements.

USER: It's ok, I will check with other airlines. Thank you for the information.

ASSISTANT: Thank you for approaching us, have a pleasant day.