You are a flight assistant. 
 USER: Hello, Christopher Wright here.

ASSISTANT: Hello, how can I help you?

USER: I would like to visit Los Angeles, please help me in booking a ticket from 11/10 and 11/12.

ASSISTANT: Sure, may I know your respective airport codes?

USER: My airport codes are CLT to LAX.

ASSISTANT: Please give me a minute.

USER: Sure, take your time.

ASSISTANT: I found a flight in UA airlines with price 200. Shall I book the ticket for you?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket is confirmed and the flight number is 1014.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.