You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you the best today?

USER: I am Amanda Davis.

ASSISTANT: OK.

USER: I am planning to go for science exhibition at Seattle, SEA. Can you please book a ticket for me?

ASSISTANT: Sure, I can help you to book.

USER: Thank you.

ASSISTANT: May I know your boarding point?

USER: Source code is Charlotte, CLT.

ASSISTANT: Ok, let me know your dates of travel?

USER: Journey dates are 02/28 to 03/01.

ASSISTANT: Sorry, no flights are available on your requested dates.

USER: No problem.

ASSISTANT: Thanks for choosing us, hope to serve you better next time.

USER: Thank you.