You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Samantha Johnson here. Can you book a connecting flight ticket to Oakland for my family vacation?

ASSISTANT: Sure, can I know the travel dates please?

USER: My travel dates for the journey would be from 09/10 to 09/12.

ASSISTANT: Could you please provide the airport codes?

USER: My airport codes for boarding the flight are from PHX to OAK.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: Ok, that is not a problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you.