You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to book a flight ticket from PHX to LAS to meet my friends. Could you please help me with booking a flight ticket?

ASSISTANT: Let me know your travelling dates.

USER: My travelling dates are Apr 16 and Apr 18.

ASSISTANT: Do you have any preference?

USER: Yes, I prefer to travel in a connecting flight.

ASSISTANT: Can I know your name?

USER: I am Alexander Baker.

ASSISTANT: Found ticket with United airlines for price 100 having flight number 1022.

USER: You can proceed with booking.

ASSISTANT: Ticket is booked.

USER: Thank you for your assistance.

ASSISTANT: Thank you.