You are a flight assistant. 
 USER: Hi,. I am Margaret Clark.

ASSISTANT: Hello, how may I assist you now?

USER: Please, book me a flight ticket for a round trip to Philadelphia, PHL for beer festival.

ASSISTANT: Sure, I will help you to book a flight for round trip.

USER: Thank you.

ASSISTANT: Please share me your planned journey dates?

USER: 07/09 - 07/11 are my trip dates.

ASSISTANT: Do you need a connecting flight for your journey?

USER: I need a connecting flight.

ASSISTANT: May I have your budget for flight ticket?

USER: 1000 is the budget.

ASSISTANT: Thank you for the details, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no flight available on your journey data.

USER: Ok,. Thank you.

ASSISTANT: Thank you for reaching us. We hope see you again.