You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I'm Carol Hall.

ASSISTANT: How can I assist you Carol Hall?

USER: I want to go PHX for Christmas shopping, can you please book me a ticket from ATL?

ASSISTANT: Sure, can you please provide your preferable journey dates to proceed further?

USER: Sure, I want to depart from here on 12/13 and return by 12/15.

ASSISTANT: Wait a moment please.

USER: Ok.

ASSISTANT: According to your provided dates, there are no services running on this route due to heavy bookings.

USER: That's ok, I will go by train then. Thank you anyways.

ASSISTANT: Thank you for contacting us.