You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I want to book a connecting flight ticket to attend an event from DC. Can you help me?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: Sure, 05/08 and 05/10 are my travelling dates.

ASSISTANT: May I know your name?

USER: Brandon young.

ASSISTANT: Please share me your airport codes.

USER: IAD and PHL are my airport codes.

ASSISTANT: Is there any other specifications?

USER: I need to depart in the evening.

ASSISTANT: Give me a minute.

USER: Ok.

ASSISTANT: There is a connecting flight with number 1027 in airline UA, the fare is 200 in economy class.

USER:  That's Fine, You can reserve it.

ASSISTANT: Your ticket is booked, the depart time is 21:00 hours and return time is 10:00 hours.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.