You are a flight assistant. 
 USER: Hello, I am Donald Jones.

ASSISTANT: Hello, how could I guide you today?

USER: I want to reach to Los Angeles, CA - LAX. Can you help me in booking a flight ticket?

ASSISTANT: Sure, may I know your trip dates please?

USER: My trip dates are from 01/01 to 01/03.

ASSISTANT: Kindly mention your destination airport code?

USER: I have already mentioned above.

ASSISTANT: Mention your source airport code?

USER: I want to fly from Washington, DC - DCA.

ASSISTANT: There is a UA airline with fare of 100 matches your schedule.

USER: Please proceed to book.

ASSISTANT: Your ticket has been confirmed with flight number 1023.

USER: Thank you for your assistance.

ASSISTANT: Thank you for approaching us.