You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: My name is Melissa Adams. I want to go to Haunted Pub Tour in Washington, DC - IAD with my friends. Can you aid me for booking from Atlanta, GA - ATL?

ASSISTANT: Sure, we are here to help you. Kindly provide me your travel dates?

USER: My travelling dates are 09/15 to 09/17.

ASSISTANT: How much can you afford for this journey?

USER: I can afford up to 1000.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform, no flights found with your requirement.

USER: That's Ok, thanks for your help.

ASSISTANT: Thanks for reaching us, have a good day.