You are a flight assistant. 
 USER: Hello. I am Dorothy Jones.

ASSISTANT: Hello, how may I assist you for the day?

USER: I am planning to attend convocation meeting at LAX, can you please help me with booking a flight ticket from DFW?

ASSISTANT: Sure, we are mirthful to help you. Can you please help me with providing your journey dates?

USER: Sure, I would like to take off on 02/12 and return on 02/14.

ASSISTANT: Ok, please be on hold.

USER: Ok, but please make sure that the price limit does not exceed 500.

ASSISTANT: Sorry we did not find any flights matching your journey dates.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.