You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you now?

USER: I am Amy Clark want to visit Denver on this weekend, can you book a ticket within the fare of 500?

ASSISTANT: Sure, may I know your airport codes?

USER: Sure, I want to travel from PHL to DEN.

ASSISTANT: When do you planned your journey dates?

USER: My travelling dates will be 07/13 and 07/15.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: There is a flight found with Delta airline of flight number 1002 and single connection. Shall I proceed for booking?

USER: Yes, proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thanks for connecting us and have a great journey.