You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be your helping hand today?

USER: Can you help me to book a flight ticket from LAX to DFW?

ASSISTANT: Sure, do you need any lay by in between the journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok, please share your class preference?

USER: There is no specific class preference.

ASSISTANT: Ok, on which dates would you like to travel?

USER: My planned travel dates are Sept 9 and Sept 11.

ASSISTANT: May I know your good name please?

USER: Myself Susan Smith.

ASSISTANT: There are no flights found on your requested dates.

USER: That's fine, no issue. Anyway thank you for checking.

ASSISTANT: Thank you for reaching us.