You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a connecting flight, could you please help me with booking a flight ticket?

ASSISTANT: Sure, we are here to help you. Can you share me your source point and destination point?

USER: Sure, my source airport code is DFW and destination airport code is LAX.

ASSISTANT: Let me know when you are willing to travel?

USER: Sure, I intend to depart on May 18 and return on May 20.

ASSISTANT: May I know your name?

USER: I am Michelle Harris.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: No worries, thank you for the information.

ASSISTANT: Thanks for approaching us.