You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Charles Green.

ASSISTANT: How can I help you?

USER: I planned to attend for a wedding in OAK, can you please help me to book a flight ticket from SEA?

ASSISTANT: Ok, please tell me your travel dates.

USER: I prefer to travel on 02/04 and 02/06.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: I found a flight 1012 of Delta airlines for you, can I book?

USER: Ok, please confirm my booking.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.