You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dorothy Taylor.

ASSISTANT: How may I help you?

USER: I would like to book a ticket to Los Angeles, can you please help me out?

ASSISTANT: Sure, I am happy to help you. Can you please share your trip dates?

USER: I am travelling on these dates 10/11 and 10/13.

ASSISTANT: May I know your regional airport codes?

USER: I am flying from CLT to LAX.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: When I have checked there are no flights that are moving on your date to book the flight ticket.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us, have a nice day.