You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Shirley Perez.

ASSISTANT: How can I help you?

USER: I would like to book a ticket to Chicago for holiday trip, can you please help me out?

ASSISTANT: Sure, I will help you in booking. Can you please share your airport codes?

USER: I am travelling from LAX to ORD.

ASSISTANT: On which dates you want to travel?

USER: My departure and arrival dates are 06/12 and 06/14.

ASSISTANT: Sorry, no flights are available on your route.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us.