You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I support you?

USER: As my soccer game is completed, I am planning to travel to home on 08/26. Can you book a ticket with in a price limit of 1000?

ASSISTANT: Sure, may I know your name?

USER: I am Steven Turner.

ASSISTANT: On what date would you like to return?

USER: I like to arrive on 08/28.

ASSISTANT: Please provide me airport details?

USER: My airport codes are from DCA-DFW.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to inform you there is no any flight available on your journey details.

USER: Ok, Thanks for the information.

ASSISTANT: Thank you, have a nice day.