You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: As I am a scientist, I want to attend science festival with my students at Philadelphia. Can you do the reservation?

ASSISTANT: Sure, may I know your travel dates?

USER: Dates are 08/22 and 08/24.

ASSISTANT: Can you please share me your airport codes?

USER: My airport codes are DEN-PHL.

ASSISTANT: May I know your name please?

USER: Pamela Brown here.

ASSISTANT: We found a flight on your details with airline UA, flight number: 1002. Shall I book this ticket?

USER: Go ahead.

ASSISTANT: Your ticket has been booked.

USER: Thank you so much.

ASSISTANT: Thank you so much for choosing us.