You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I want to book a flight with a less cost of 500 as I can not afford much. Can you please aid me to book a flight ticket for meeting my friend?

ASSISTANT: Sure, I will help you in booking the ticket.

USER: Thank you for the help.

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are 03/24 and 03/26.

ASSISTANT: Can I know your airport codes too?

USER: My airport codes are SEA and ATL.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there are no flights found in our database.

USER: Not a problem, I will go with another resources to reach out my destination.

ASSISTANT: May I know your name please?

USER: My name is Angela Williams.

ASSISTANT: Thank you.

USER: You are welcome.