You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need a direct flight from LAX to DFW to attend my brother wedding. Can you help me in booking a flight ticket?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, I would prefer to depart on Mar 14 and Mar 16.

ASSISTANT: Do you any other specifications to be met?

USER: I am looking for a normal cost airline.

ASSISTANT: Are you looking for any class preferences?

USER: No.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Can you please share your good name?

USER: Sure, Melissa Nelson here.

ASSISTANT: Sorry, no flights found on your given details.

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you for choosing us.