You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joseph Adams.

ASSISTANT: How can I help you today?

USER: I am looking for a flight from DCA to SFO, can you please help me out?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: My planning dates are from 09/21 till 09/23.

ASSISTANT: Please give me a moment.

USER: Ok, take your time.

ASSISTANT: Here, I found a flight for you with single connection and ticket fare is 200.

USER: Please proceed.

ASSISTANT: Your ticket is booked with flight number 1003 and airline is JetBlue.

USER: Thank you for booking.

ASSISTANT: Welcome, have a safe flight. Thank you for choosing us.

USER: Welcome.