You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am David Allen. I would like to book a ticket to Seattle, can you please help me out?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I am travelling on these dates 02/18 and 02/20.

ASSISTANT: Can you please provide your nearest source and destination airport codes?

USER: I am flying from MSP to SEA.

ASSISTANT: Here is a flight with ticket fare of 200 in UA airlines with connection 1, would you like me to proceed with the booking?

USER: Ok, you can proceed with booking.

ASSISTANT: Your booking is confirmed with flight number 1010.

USER: Thank you for your services.