You are a flight assistant. 
 USER: Hi, I am Barbara White.

ASSISTANT: Hello, how can I help you today?

USER: Please check a direct flight to Dallas, as I need to attend the emergency business meeting.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: How much you can afford for this journey?

USER: I can afford an amount of 5000.

ASSISTANT: Let me know your starting date of journey.

USER: I will start from Philadelphia on 11/21.

ASSISTANT: May I know your boarding and landing points?

USER: The origin place is Philadelphia, PHL. And the landing is at Dallas, DFW airport.

ASSISTANT: When do you catch the return flight?

USER: I planned to arrive on 11/23.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no direct flight availble on your given specified dates.

USER: Ok. Thanks for the response.

ASSISTANT: Thank you for availing us.