You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please book a flight ticket from CLT to SEA?

ASSISTANT: Sure, help me with the trip dates?

USER: Thank you. I have planned my travel  dates as Jan 25 and Jan 27.

ASSISTANT: May I know your name please?

USER: Sure, myself Cynthia Johnson.

ASSISTANT: Do you have any preferences?

USER: Yes, I am looking for direct flight so please make sure that.

ASSISTANT: Sorry, no flights were available at this moment.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.