You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am Anna Smith. Can you help me in booking my flight ticket from 05/28 to 05/30?

ASSISTANT: Sure, please provide your preferred airport locations??

USER: IL-ORD to NV-LAS will be my airport codes.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: We found a 1003 Delta airline with fare of 200 matches your schedule. Shall I proceed with booking?

USER: You can reserve.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.