You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Daniel Lopez here.

ASSISTANT: How may I help you, Lopez?

USER: I'm planning a round trip in PHX, can you please help me in booking a ticket?

ASSISTANT: Sure Lopez, may I know your journey dates please?

USER: My travel dates are 04/12 and 04/14.

ASSISTANT: Please give me a minute.

USER: Sure, take your time.

ASSISTANT: Lopez, I found a flight with Delta airlines available with price 100. Shall I book the ticket?

USER: Yes, please proceed booking.

ASSISTANT: Your ticket is confirmed and the flight number is 1015.

USER: Thank you so much.

ASSISTANT: Thank you for choosing us, have a safe journey.