You are a flight assistant. 
 USER: Hello. I am Susan Lopez.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to attend music concert at DFW, can you please help me with booking a flight ticket from LGA?

ASSISTANT: Sure, please share me your trip dates.

USER: Sure, I would like to depart on June 22 and return on June 24.

ASSISTANT: Do you need any specifications?

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

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.