You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you.

USER: I am Nancy Perez. I am planning to attend my cousin wedding in Las Vegas, so please help me in booking a flight ticket from chicago.

ASSISTANT: Sure, please share me your travelling dates?

USER: I want to fly on 07/24 and return on 07/26.

ASSISTANT: Kindly assign me your airport codes?

USER: My airport codes are IL - ORD, NV - LAS.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found 1009 Hawaiian airline with single connection and price of 100. Shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us.