You are a flight assistant. 
 USER: Hi. Hi. Timothy Jackson here.

ASSISTANT: Hello, how may I guide you?

USER: Can you book a ticket from IAD to OAK?

ASSISTANT: Sure, can I know your preferable dates?

USER: Ok, here are my travel dates 04/27 and 04/29.

ASSISTANT: I found a flight 1009 of AA airlines matches with your preferences, can I proceed?

USER: Please go ahead.

ASSISTANT: Your ticket is booked.

USER: Thank you for the help.

ASSISTANT: Thank you.