You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you for today?

USER: I am Laura Jones. I am planning to visit my grand parent's.Can you help me out to book a ticket from ORD to HOU?

ASSISTANT: Yes, can I know your dates of travel?

USER: I want to start on 05/06 and I will back on 05/08.

ASSISTANT: Ok, give me a moment. I will get back to you.

USER: Sure, take your own time.

ASSISTANT: Sorry to say that there is no flight services provided on this route in your requested dates.

USER: That's really sad to hear. Thank you for your service.

ASSISTANT: You are welcome.