You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am planning to go religious festivals at Charlotte with my family. Can you help me to book a ticket?

ASSISTANT: Sure, I am happy to help you.

USER: I need a direct flight.

ASSISTANT: Ok. How much you can afford for a ticket fare?

USER: Price should not cross 5000.

ASSISTANT: When did you planned to travel?

USER: Travel dates are 06/04 and 06/06.

ASSISTANT: Can you please provide me your airport abbreviates?

USER: My airport codes are ORD-CLT.

ASSISTANT: Thank you for providing us the details, please wait for a while.

USER: Ok.

ASSISTANT:  Thank you for waiting, we are sorry to say that no flights were found based on your schedule dates.

USER: No problem, I will check with another airline.

ASSISTANT: May I know your name?

USER: Robert Lee here. Thanks for the information.

ASSISTANT: Thank you for reaching us Robert Lee.