You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I support you?

USER: I want to meet my niece on her birthday, so please book my ticket from ATL to PHX.

ASSISTANT: Sure, to reserve a ticket may I know your planned travel dates?

USER: My itinerary dates are Jan 29 and Jan 31.

ASSISTANT: Do you need any other requirements?

USER: I need a connecting flight and I want to depart in the morning.

ASSISTANT: Can I know your name please?

USER: Deborah Nelson here.

ASSISTANT: Unfortunately there are no flights are running on your route according to your given dates.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.