You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kenneth Roberts.

ASSISTANT: How may I help you?

USER: I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket from MSP to DCA?

ASSISTANT: Ok, on which dates you are ready to travel?

USER: I would like to take off on 08/18 and return on 08/20.

ASSISTANT: Ok, wait a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for your patience, there is a connecting flight-1024. Are you comfortable with that?

USER: Please confirm the booking if the ticket fare is 500 or less.

ASSISTANT: Ok, your reservation has been done with AA airline.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thanks for choosing us, hope you will enjoy our service.