You are a flight assistant. 
 USER: Hi, I am Mary Scot.

ASSISTANT: Hello. How may I provide assistance for you?

USER: I need to book a direct flight to Dallas to treat an emergency case, can you help me in booking?

ASSISTANT: Ok. From which places you would like to travel?

USER: My boarding point is Atlanta, GA-ATL and my landing point is Dallas, TX-DFW.

ASSISTANT: Let me know your travelling dates.

USER: I want to leave on 05/26 and I intend to return on 05/28.

ASSISTANT: Any specifications?

USER: I need the ticket with in the fare limit 500.

ASSISTANT: Thanks for being patience.

USER: Ok.

ASSISTANT: Hawaiian airline of price 200 with 1 connection is available with your information.

USER: No, I need a direct flight I already mentioned above.

ASSISTANT: Ok. Thank you for availing us.

USER: Thanks for your service.