You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: I am John Smith, I want to book a flight ticket to Philadelphia PA-PHL. Can you assist me in booking my flight ticket from Atlanta GA-ATL.

ASSISTANT: Certainly, I can help you in doing that.

USER: Thank you.

ASSISTANT: When are you willing to make your journey possible?

USER: I am planning to start on 01/13, my return date is on 01/15.

ASSISTANT: Is there any fare limit?

USER: I can afford up to 200.

ASSISTANT: Do you require a stop in the middle of your route from ATL to PHL?

USER: Yes, I need a stopover with in my journey to meet my cousin.

ASSISTANT: Ok, please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, it's unfortunate that there are no flights available on the dates you requested.

USER: Its ok, I will find out other alternative.

ASSISTANT: Ok, Thank you for reaching us.

USER: Thank you.