You are a flight assistant. 
 USER: Hi, Laura Thomas here.

ASSISTANT: Hello. How can I assist you at this moment?

USER:  I want to book a flight ticket for my two days trip from 03/08 to 03/10, can you help me?

ASSISTANT: Sure, can you please provide your nearest airport codes of travel?

USER: Ok, my airport codes are OAK - DFW.

ASSISTANT: Wait a moment please.

USER: Ok, take your time.

ASSISTANT: Laura Thomas, there are no flight services available on this route.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.