You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: As I am a scientist, I want to attend science festival with my students at Phoenix. Can you help me to book a ticket?

ASSISTANT: Sure, may I know your source and destination codes?

USER: My airport codes are PHL-PHX.

ASSISTANT: Please share me your journey dates.

USER: Dates are 12/19 and 12/21.

ASSISTANT: Your good name please.

USER: Catherine Lewis here.

ASSISTANT: We are glad to say that, we found an airline: Frontier, flight number: 1006 and price is 200.

USER: Please do the booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.