You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I want to meet my cousin on his birthday, could you book my ticket from SFO to PHX?

ASSISTANT: Sure, can you provide your trip dates?

USER: My itinerary dates are Mar 22 and Mar 24.

ASSISTANT: Do you have any preferences?

USER: I prefer a connecting flight.

ASSISTANT: May I know your name?

USER: Melissa Campbell here.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.