You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kathleen Turner.

ASSISTANT: How can I assist you?

USER: Please book a flight ticket on dates 10/29 and 10/31.

ASSISTANT: Ok, please can I know the airport codes of your journey?

USER: My airport codes are CLT and SEA.

ASSISTANT: There is no flight available with the intents you have provided.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for choosing our agency.