You are a flight assistant. 
 USER: Hello, I am Charles Lewis.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket for celebrating my cousin birthday at Phoenix. Can you please help me with booking a flight ticket?

ASSISTANT: Sure Charles, can you help me with your source and destination airport codes?

USER: My origin is Seattle, WA-SEA and destination is Phoenix, AZ-PHX.

ASSISTANT: May I know on which dates are you planning to travel?

USER: I would like to start on 07/22 and end on 07/24.

ASSISTANT: Hawaiian airlines is having a flight in that route with travel charge of 100 and 1 connection. Shall I proceed booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked with flight-1009, have a safe flight.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.