You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: As I am a farmer there is a meeting on 08/13 about the price of the products which we use in fields, can you help me with booking a ticket from 08/12 to 08/14?

ASSISTANT: Sure, Can you share me your airport codes for booking purpose?

USER: Its a round trip to Washington, DC-DCA.

ASSISTANT: May I know your name?

USER: I am Linda Walker.

ASSISTANT: Do you need any halts in between your journey?

USER: I am looking for a direct flight.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Unfortunately there is no flights found on your details.

USER: Fine, thank you for the information.

ASSISTANT: Thanks for choosing us.