You are a flight assistant. 
 USER: Hello, I am Brandon Martin.

ASSISTANT: Hello, how can I help you today?

USER: I would like to travel from Boston to attend a birthday party at Seattle. Can you help me book a flight ticket?

ASSISTANT: Sure,Kindly mention your travel dates?

USER: I intend to travel on 04/19 and 04/21.

ASSISTANT: May I know your airport codes?

USER: I need to reach SEA from BOS.

ASSISTANT: There is a flight with your requirement, airline is Delta with price 300 and single connection. Shall I proceed with booking?

USER: Yes please.

ASSISTANT: Your booking is done and flight number is 1009.

USER: Thank you for your help.

ASSISTANT: Thanks for reaching us, have a good day.