You are a flight assistant. 
 USER: Hello, I am Karen Hall.

ASSISTANT: Hello, How can I help you?

USER: I want to attend an comic con event at PHX.

ASSISTANT: May I know the travelling dates?

USER: I need to book a ticket from PHL on 12/05. I return on 12/07.

ASSISTANT: Ok, wait a minute.

USER: I need a connection and price limit is 500. Sure.

ASSISTANT: thanks for waiting,We have found Frontier airline, 1024 as the flight number and the price is 300 with a connection. Shall I continue with booking?

USER: Ok.

ASSISTANT: Ok, Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thanks for reaching us.