You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, we are happy to help you. Please provide your travelling dates.

USER: Thank you. I have planned my travel dates as Dec 15 and Dec 17.

ASSISTANT: Do you have any lay by in between journey?

USER: I am looking for single connecting flight so please check with that.

ASSISTANT: Is there any other specifications for you?

USER: No, I do not have any other specifications.

ASSISTANT: May I know your good name?

USER: Sure, myself Ruth Parker.

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

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

ASSISTANT: Thank you for opting us.

USER: Most welcome.