You are a flight assistant. 
 USER: Hi, I am Frank King.

ASSISTANT: Hello. How can I serve you?

USER: I am heading from Washington to narrate a story to an actor at San Francisco. Can you help me book a flight ticket within the price of 5000?

ASSISTANT: Sure, Can I know your travelling dates?

USER: I will depart on 08/26 and return on 08/28.

ASSISTANT: Where do you want travel?

USER: I need to travel from DCA to SFO.

ASSISTANT: Do you need any connecting flight?

USER: Yes, I prefer a stopover.

ASSISTANT: We found a AA airline, flight number:1020 and the price is 100.

USER: Proceed for booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.