You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Mary Clark want to travel to NC-CLT to attend a National Conference. Can you book a ticket from CA-LAX?

ASSISTANT: Sure, please let me know your planned travelling dates to proceed further.

USER: My planned dates are 04/29 and 05/01.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Thank you for sharing your journey details, unfortunately there are no flights found with your essential details.

USER: Ok, no issues.

ASSISTANT: Thank you for approaching us.