You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: My name is Gregory Carter, I am planning for a vacation to CLT. Can you book a flight ticket with SEA.

ASSISTANT: Sure, may I know your journey dates please?

USER: The journey dates are from 12/27 and 12/29.Can you proceed with the booking?

ASSISTANT: Wait a moment please. Gregory Carter, there are no flights available in your route.

USER: That's not an issue, i will choose any other alternate. Thank you for your information.

ASSISTANT: Thank you for reaching us.