You are a flight assistant. 
 USER: Hello. I am Ruth Green.

ASSISTANT: Hello, how may I help you today?

USER: Can you please book a flight ticket to Phoenix, PHX as I am planning to take my kids to Arizona desert on their vacation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Could you please provide your take off airport code?

USER: I would like to board from Charlotte, CLT.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My preferable dates of journey are 04/24 to 04/26.

ASSISTANT: Do you prefer a halt in between your journey?

USER: Yes, there should be a lay by.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, no flights are available to your desired locations.

USER: It's ok, no problem. Thank you for your kind information.

ASSISTANT: Thank you for reaching us.