You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Richard Jackson here.

ASSISTANT: How may I help you?

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

ASSISTANT: Sure Richard, please provide me your journey dates.

USER: Sure, my departure date is 05/20 and return date is 05/22.

ASSISTANT: Please wait for a minute.

USER: Sure, I'll wait.

ASSISTANT: I found a flight in UA airlines with price 100. Shall I book the ticket for you?

USER: Yes, that's fine for me. You can proceed booking.

ASSISTANT: Your ticket is confirmed and the flight number is 1003.

USER: Thank you for booking.

ASSISTANT: Thank you for your assistance.