You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket to Los Angeles, with price under 500. Can you help me with it?

ASSISTANT: Sure, do you have any connection preference?

USER: I need a single connection in between the journey.

ASSISTANT: Ok, could you please provide your journey codes?

USER: Journey codes are IAD-LAX.

ASSISTANT: Sorry to say, no flights were found on your dates.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us. Have a nice day!. May I know your name for documentation purpose?

USER: My name is Linda Campbell.

ASSISTANT: Thank you.

USER: Thanks for the help.