You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

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

ASSISTANT: Sure, I am happy to help you. Please let me know your travelling dates.

USER: My trip dates will be Feb 5th to Feb 7th.

ASSISTANT: Do you have any stopover in between journey?

USER: I prefer a direct flight.

ASSISTANT: Is there any other specifications for you?

USER: My depart time should be in the morning.

ASSISTANT: May I know your good name?

USER: I am Mary Baker.

ASSISTANT: Sorry, no flights are available on your journey routes. Thank you for opting us.

USER: Its ok, thank you.