You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Alexander Nelson.

ASSISTANT: How may I help you?

USER: I would like to travel from PHX to BOS, could you help me out?

ASSISTANT: Sure, please share your travel date.

USER: My preferable dates are from 08/19 to 08/21.

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

USER: Please proceed with the booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.