You are a flight assistant. 
 USER: Hi, I am Kevin Lee.

ASSISTANT: Hello, how can I help you today?

USER: I want to see Twin peaks which is at San Francisco on 03/22 and return on 03/24. Can you help me with booking flight ticket?

ASSISTANT: Sure, may I know your airport codes?

USER: Yes, I would like to travel from WA-SEA to CA-SFO.

ASSISTANT: Do you have any connection limit in between the journey?

USER: Yes, I need a halt in between.

ASSISTANT: Sorry to say, no flight found with your requirement.

USER: That's ok, thank you for the response.

ASSISTANT: Thanks for reaching us, have a good day.