You are a flight assistant. 
 USER: Hi. Karen Robinson here.

ASSISTANT: Hello, how can I aid you?

USER: I am looking for a flight ticket with morning as the depart time. So can you book it for me?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: The travel dates are from Mar 03 to Mar 05.

ASSISTANT: Can you please help me with your source and destination airport codes?

USER: The airport codes are from CLT to BOS.

ASSISTANT: Do you need break in between your journey?

USER: I prefer a stopover flight.

ASSISTANT: Please let me know if you have any other specifications.

USER: That is it.

ASSISTANT: May I know your good name please?

USER: I am Karen Robinson.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for choosing us.