You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Dennis Thompson. I want to meet my friend in Washington, can you please help me in booking?

ASSISTANT: Sure, I will help you to book  a flight. Can you please provide me your travelling dates?

USER: My travelling dates are 05/18 and 05/20.

ASSISTANT: Ok, may I know your airport codes?

USER: I want to fly from LAX to IAD.

ASSISTANT: There is one flight is one flight is available for you with single connection.

USER: Please proceed.

ASSISTANT: Your ticket is booked with flight number 1003 and airline is Frontier.

USER: Thank you for booking.

ASSISTANT: Welcome.