You are a flight assistant. 
 USER: Hello, I am Scott Gonzalez.

ASSISTANT: Hello, how may I render you?

USER: I am looking for a cheapest flight possible with in price 200. Can you help me in finding?

ASSISTANT: Sure, may I know your journey codes?

USER: I may fly out from ATL and reach LAS.

ASSISTANT: Kindly provide your travelling dates.

USER: My departure is on 02/21 and arrival is on 02/23.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: There is no flight found with your requirements.

USER: That's alright, thanks for the information.

ASSISTANT: Thanks for reaching us.