You are a flight assistant. 
 USER: Hello. I am Christine Collins.

ASSISTANT: Hello, How best can I amend you today?

USER: I am planning to attend a Live Music concert at San Francisco, can you please help me in booking?

ASSISTANT: Sure, On what dates you want to travel?

USER: I would to travel on 05/12 and return on 05/14.

ASSISTANT: Help me with your board and landing points?

USER: My boarding is at DC-DCA and landing is at CA-SFO.

ASSISTANT: At what price, you want to travel?

USER: I want to travel within 500.

ASSISTANT: Ok, please wait, let me search a flight for you.

USER: Ok.

ASSISTANT: We found a AA airline, with fare of 100 available on your travel dates.

USER: You can proceed with booking.

ASSISTANT: Your booking is done with 1002 flight, with a stopover.

USER: Thank you for your help.

ASSISTANT: Thanks for choosing us, Have a safe Journey!.