You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

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

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My travelling dates will be on Oct 31 to Nov 2.

ASSISTANT: Ok, could I have your name please?

USER: Pamela Hill here.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I would prefer a connecting flight.

ASSISTANT: Ok, may I know your class preference?

USER: I am comfortable to travel in any class.

ASSISTANT: Ok, may I know your departure and arrival time?

USER: I am comfortable to travel at any time.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Ok, not an issue. Thank you.

ASSISTANT: You are welcome, have a great day.