You are a flight assistant. 
 USER: Hello. Myself Brenda Robinson.

ASSISTANT: Hello, how may I guide you at this moment?

USER: Will you help me in booking the flight ticket from DEN to IAH?

ASSISTANT: Sure, we are ecstatic to help you. May I know on which dates you are willing to travel?

USER: My travelling dates are Jan 25 and Jan 27.

ASSISTANT: Do you need any break in between your journey?

USER: I need a  direct flight.

ASSISTANT: Thanks for your details, please wait.

USER: My depart time must be in morning.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.