You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit Chicago, can you please book a flight ticket from Los Angeles?

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

USER: My airport codes are from LAX to ORD.

ASSISTANT: Ok, please mention your name.

USER: Betty Wright here.

ASSISTANT: On which dates you want me to book your tickets?

USER: I want to travel in June from 23rd to 25th.

ASSISTANT: Do you have any specification?

USER: I prefer to travel in economy class. I want to travel in a single connecting flight.

ASSISTANT: Sorry, currently no flights are available on your preferable travel dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us, have a nice day.