You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How shall I help you?

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

ASSISTANT: Please provide your journey codes?

USER: My airport codes are PHL-LAX.

ASSISTANT: Please provide your journey dates?

USER: Dates are 01/16 and 01/18.

ASSISTANT: Please mention your name?

USER: Betty Lopez here.

ASSISTANT: No flights found.

USER: No problem, Thank you.

ASSISTANT: Thank you.