You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in booking my ticket from IAH to ORD?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: Thank you and my travelling dates are from 06/08 to 06/10.

ASSISTANT: Ok, do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Ok, let me know your specifications.

USER: There are no other specifications.

ASSISTANT: Ok, may I know your name?

USER: Myself Michael Roberts.

ASSISTANT: Sorry, no flights are available on your route.

USER: It's ok, thank you.

ASSISTANT: Welcome.