You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Ryan Edwards here.

ASSISTANT: Ryan Edwards, how can I aid you today?

USER: I got an invitation from my friend to attend seafood festival at Houston, can you please book a ticket from PHL to HOU?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: Sure, my planned departure and return travel dates are 5th and 7th of September.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you. I found a flight for you with Spirit airline and it costs you 100. Shall I proceed?

USER: That's fine, you can proceed for booking the ticket.

ASSISTANT: Your ticket has been booked with 1007 flight number.

USER: Thank you so much for your help in booking the ticket.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.