You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know your name?

USER: I am Richard Lewis.

ASSISTANT: How can I help you Richard Lewis?

USER: I need to book a flight ticket for a round trip with one connection.

ASSISTANT: Ok, May I know your price limit?

USER: I need ticket with in the price limit 200.

ASSISTANT: Ok, Can you provide your travel dates?

USER: I need to reach San Francisco on 02/16 and I intend to return on 02/18.

ASSISTANT: Ok, may I know your airport code?

USER: My airport code is CA-SFO.

ASSISTANT: Ok, we found an Delta airline with flight number 1010 and price of 100 matching your request. Your booking is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.