You are a flight assistant. 
 USER: Hi, I am Rebecca Allen.

ASSISTANT: Hello,. How may I assist you ?

USER:  I want to attend my sisters friend engagement at MIchelle's Ballroom. Could you please book a ticket from LAX to ORD.

ASSISTANT: Please provide travelling dates ?

USER: Sure, My travelling dates are 04/22 and return on 04/24.

ASSISTANT: Flight number 1011, airline UA, price 100 with connection 1 is available.

USER: You can proceed with booking.

ASSISTANT: Ticket is booked.

USER:  Thank you for your service.

ASSISTANT: Thanks.