You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I'm Jessica Lewis. During winter I would like to go to Los Angeles, so could you please book a flight ticket?

ASSISTANT: Sure, please provide me your travel details?

USER: I would like to go on 05/14 and return on 05/16. Please make sure that the price should not exceed 200 with single connection.

ASSISTANT: May I know your airport codes?

USER: Airport codes are SFO to LAX.

ASSISTANT: As per your requirement I have found a flight in Delta airline, shall I proceed with the booking?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket is booked successfully.

USER: Thank you.

ASSISTANT: Thank you for contacting us.