You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dorothy Lee.

ASSISTANT: How can I help you at this moment?

USER: I would like to meet my valentine on Valentine's day, can you reserve me a flight ticket to reach LGA?

ASSISTANT: Sure, I will help you with this. Can you please provide your journey dates?

USER: I will depart on Feb 13 and return on Feb 15.

ASSISTANT: May I know your origin airport code please?

USER: My take off airport code is PHX.

ASSISTANT: Wait a moment please.

USER: Sure, but please make sure to book a return ticket in the morning time.

ASSISTANT: Dorothy Lee, there are no flight services available on this route on your provided dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for contacting us.