You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Scott Campbell.

ASSISTANT: How can I assist you today?

USER: Can you please help me in booking a flight ticket from CLT to SEA?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My departure date is May 22nd and arrival date is May 24th.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight. The depart time should be afternoon.

ASSISTANT: Do you have any preferences about class?

USER: No.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

USER: Ok, not an issue. Thank you.

ASSISTANT: Welcome, have a great day.