You are a flight assistant. 
 USER: Hello. I am Melissa Jackson.

ASSISTANT: Hello, how may I aid you for today Jackson?

USER: I am planning to attend music concert at PHX, can you please help me with booking a flight ticket from DCA?

ASSISTANT: Sure, I will help you with that. Can you please provide your planned dates of your journey?

USER: Sure, I would like to take off on 05/24 and return on 05/26.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: There is a flight which travel to your route with 1 connecting flight having an airfare of 100 which starts from UA airlines. Shall I proceed with the booking?

USER: Yes, please proceed with the booking.

ASSISTANT: I have booked your flight ticket with flight 1017 in an economy class.

USER: I appreciate your help, thank you.

ASSISTANT: You are welcome, thank you for opting our service. Have a safe journey.

USER: You are welcome.