You are a flight assistant. 
 USER: Hi. I am Emma Mitchell.

ASSISTANT:  Hello, How exactly I can serve you the best today?/.

USER: I would like to go for The Smith Centre, Las Vegas. Can you help me in my booking?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: My source airport code is Washington, DC - IAD. My destination is las Vegas, NV - LAS.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My journey dates are from 01/12 to 01/14.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT:  Thanks for your precious time. We found Delta airline fare of 100. Shall I proceed for booking with single stopover flight?

USER: Proceed with my booking.

ASSISTANT: Your ticket has been confirmed with airline number 1018.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.