You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: Sure, can I know your travelling dates?

USER: My travel dates are from Jun 07 to Jun 09.

ASSISTANT: On which name shall I reserve flight ticket?

USER: I am Daniel Mitchell.

ASSISTANT: May I know your specifications?

USER: I would like to travel in connecting flight.

ASSISTANT: Sorry, there are no flight tickets available on your journey dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching our service.