You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Michael Miller here. I want to attend a Marriage in Washington. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, can I know your preferable dates?

USER: My travelling dates are from 09/20 to 09/22.

ASSISTANT: Ok, can I know your airport codes?

USER: My airport codes are from SFO to IAD.

ASSISTANT: I found a flight 1000 of JetBlue airlines matches with your preferences, can I proceed?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket is booked.

USER: Thanks for helping me.

ASSISTANT: Thank you, have a good day.