You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Christopher Taylor.

ASSISTANT: Ok.

USER: I am planning to visit Disneyland at Los Angeles, could you please help me with booking a flight ticket?

ASSISTANT: Sure, can I know your preferable dates?

USER: I would like to take off on 01/18 and return on 01/20.

ASSISTANT: Ok, can I know your airport codes?

USER: My nearest source airport code is DCA and destination airport code is LAX.

ASSISTANT: I found a flight 1008 of UA airlines matches with your preferences, can I proceed?

USER: Please proceed with the booking if the connection is 1.

ASSISTANT: Your ticket is booked.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you.