You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Brenda Williams. I want to book a flight ticket from SEA to EWR. Could you help me in booking?

ASSISTANT: Sure, can I know your preferable dates?

USER: My travelling dates are from 06/12 to 06/14.

ASSISTANT: I found a flight 1003 of UA airlines matches with your preferences, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you for helping me.

ASSISTANT: Thank you.