You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: Can you please help me to book flight ticket from SFO to IAD?

ASSISTANT: Can you please share your preferable journey dates?

USER: My trip dates are May 20 and May 22.

ASSISTANT: May I know your name please?

USER: Sure, I am Timothy Walker.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Is there any other specifications?

USER: No, thank you for asking.

ASSISTANT: I found a ticket for you with price of 200, flight number is 1022 in economy class and connection is 1.

USER: Proceed for booking.

ASSISTANT: I confirmed your ticket successfully.

USER: Thank you.

ASSISTANT: Thank you.