You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you today?

USER: I am Karen Parker. I am planning to go for Yosemite Adventure with my friends at Detroit,Mi - DTW. Can you please book a ticket under the price 500?

ASSISTANT: Sure, let me know your travelling dates please?

USER: I want to fly on 08/26 and recur on 08/28.

ASSISTANT: may I know your source airport code?

USER: I want to board from Washington DC - IAD.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a connecting flight under fare of 100 in 1014 flight number. Shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Your ticket has been booked with in UA airline.

USER: Thanks for your assistance.

ASSISTANT: Thanks for contacting us. Have a good day.