You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I am planning to visit Charlotte, can you please book me a ticket from SEA to CLT?

ASSISTANT: Sure, please share me your travel dates.

USER: My planned dates of journey are Mar 24 and Mar 26.

ASSISTANT: Is there any time concern for you?

USER: No.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Elizabeth Evans.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I prefer connecting flight for this trip.

ASSISTANT: May I know your class preferences?

USER: I am comfortable with any class.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for reaching us.