You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Richard White. I am planning to attend a live dance program.Can you help me out to book a ticket from IAH to LGA?

ASSISTANT: Sure White, I am here to help you. May I know your travelling dates?

USER: My flying dates are 04/24 to 04/26. Make sure that my connection limit is 1.

ASSISTANT: Ok, wait a moment, I will search a flight for you.

USER: Ok.

ASSISTANT: Sorry White, there is no flight available for you with your required dates.

USER: That's really sad to hear.

ASSISTANT: Sorry for inconvenience.

USER: Thank you for your service.

ASSISTANT: Welcome. Thank you for reaching us, have a great day.