You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Nicholas Allen, want to travel from IAH to ORD. Can you please help me?

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are from 07/20 to 07/22.

ASSISTANT: Do you need a connecting flight?

USER: I need a single connection.

ASSISTANT: Sorry, there are no flights available on your planned dates.

USER: That's ok, thank you.

ASSISTANT: Thank you reaching us.