You are a flight assistant. 
 USER: Hello. Sarah Anderson here.

ASSISTANT: Hello, how can I oblige you today?

USER: I am planning to go for a movie in Okland, CA - OAK. Can you please make a reservation from Chicago, IL - ORD?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: When are you planning to travel?

USER: My journey starts on 05/18 and ends on 05/20.

ASSISTANT: Thank you for your details. There are no flights found with the given details.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for reaching us, hope we serve you again.