You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I best support you today?

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

ASSISTANT: Sure, please let me know your planned travelling dates?

USER: Dates are 02/01 and 02/03.

ASSISTANT: Please forward your travelling airport codes?

USER: My airport codes are DFW-SEA.

ASSISTANT: May I know your name?

USER: Donna Evans here.

ASSISTANT: There are no flights found with the given details.

USER: No problem, Thank you.

ASSISTANT: Thank you for  contacting us.