You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: William Clark here. I want to book a ticket from SFO to DCA, to meet my best friend. Will you help me?

ASSISTANT: Yes sure, I'll help you. Can you tell me your trip dates?

USER: I would like to travel on 12/17 and 12/19.

ASSISTANT: There is a flight for you with 1 connection and price is 300.

USER: Proceed.

ASSISTANT: Ok. Your ticket is booked and flight number is 1017.

USER: Thank you for your help.

ASSISTANT: Most welcome.