You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donna Parker.

ASSISTANT: Donna Parker. How can I help you?

USER: I would like to travel from CLT to MSP, can you help me to book a flight ticket?

ASSISTANT: Please, may I know the travel dates?

USER: My preferable journey dates are Jan 12 and Jan 14.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: Do you have any airline preferences?

USER: I prefer normal cost airlines.

ASSISTANT: Is there any time concern.

USER: I would like to return in the evening.

ASSISTANT: May I know the connection limit?

USER: I need a direct flight.

ASSISTANT: Are there any other preferences?

USER: No, thank you for asking.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry Donna Parker. There are no flights available on your route with these requirements.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for approaching us.