You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Debra Wright. I am planning to book a ticket from IAH to LGA. Can you please help me out?

ASSISTANT: Yes, I can help you. Can you tell me your travelling dates?

USER: I would like to travel on 09/22 and return back on 09/24.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Yes, you can proceed the booking. That's fine.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your service.