You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Let me know your travelling dates.

USER: My travel dates are Oct 30 and Nov 1 respectively.

ASSISTANT: Do you have any preference?

USER: I am looking for business class to fly.

ASSISTANT: Can I know your name?

USER: Janet Clark here.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Make sure that connection limit is 1.

ASSISTANT: Sure. No flights found.

USER: Not an issue.

ASSISTANT: Thank you.

USER: Thank you for help.