You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My name is Michelle Hernandez, I want to visit a famous museum in Los Angeles. Can you help me to book the flight ticket?

ASSISTANT: Sure, I am here to help you. May I know your travelling dates?

USER: Yes, I would like to start my journey on 01/27 and return on 01/29.

ASSISTANT: Would you please provide your airport codes too.

USER: Sure, as I had planned a round trip the source airport code and destination code is LAX.

ASSISTANT: Do you have any other requirements?

USER: Yes, I need 1 connecting flight.

ASSISTANT: Sorry Hernandez, there is no flight for you according to your provided information.

USER: That's ok, I will plan my trip on other day. Anyways thank you for assistance.

ASSISTANT: Ok, thanks for choosing us.