You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: My name is Nancy Turner. I am looking to book a flight ticket to meet my friend in Charlotte. Can you help me to book a flight ticket from SEA to CLT?

ASSISTANT: Sure, can you share your journey dates?

USER: My travelling dates are June 11 and June 13.

ASSISTANT: Do you have any preferences?

USER: My departure time is morning.

ASSISTANT: Give me a minute.

USER: Sure, I will wait for your response.

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

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for opting us.