You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Sure. Can I know your travelling dates?

USER: Dates are 03/25 and 03/27.

ASSISTANT: Please share me your airport codes.

USER: My airport codes are PHX-HOU.

ASSISTANT: May I know your name?

USER: Helen Roberts here.

ASSISTANT: We found a Delta airline, flight number:1002 and the price is 100.

USER: Please do the booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you so much.

ASSISTANT: Thank you for opting us.