You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Angela Adams here.

ASSISTANT: How may I assist you today?

USER: In Chicago, I have some urgent work. So, can you please book my ticket from LGA to ORD?

ASSISTANT: Sure, I will help you. Can you please provide your preferable dates that you want to travel?

USER: My travelling dates are from 01/12 to 01/14.

ASSISTANT: Ok, please wait a moment to check the flights.

USER: Sure.

ASSISTANT: Sorry to inform you that, there are no flights available in your planned dates.

USER: It's fine.

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

USER: Thank you to inform me.

ASSISTANT: Welcome.