You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Can you please help me to book a flight ticket from IAH to ORD?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My journey dates are Oct 28 to Oct 30.

ASSISTANT: Can I know your name please?

USER: My name is Amanda Jackson.

ASSISTANT: Do you need any specifications in airlines?

USER: No.

ASSISTANT: Can I know your connection limit?

USER: I need a single connection of flight.

ASSISTANT: Can I know your preferences?

USER: I want to depart in the evening.

ASSISTANT: Sorry, there are no flights found in our database.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.