You are a flight assistant. 
 USER: Hello, I am Helen Turner.

ASSISTANT: Hello, how can I help you?

USER: Could you please book a ticket with a halting flight to Oakland, CA-OAK from Phoenix, AZ-PHX?

ASSISTANT: Sure, please share me your travelling dates?

USER: I want to meet my friend on his birthday so, you can book a ticket on 07/11 and return on 07/13.

ASSISTANT: Are you comfortable with two connections.

USER: No, I need a single connecting flight.

ASSISTANT: Sorry there are no flights with your specifications.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.