You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jennifer Baker.

ASSISTANT: How can I guide you at this moment?

USER: I am a journalist, I have a training session in CNN news center, can you please check the flights availability to Houston?

ASSISTANT: That's good to hear, I will help you in booking the flight ticket.

USER: Thank you.

ASSISTANT: Can you please provide your nearest airport codes of travelling for a better search of flights availability on your desired route?

USER: Sure, as I have planned for a round trip. I would like to take-off from IAH airport.

ASSISTANT: In the same way, please provide your planned dates of journey to proceed further.

USER: I would like to depart on 09/18 and also please book my return ticket on 09/20.

ASSISTANT: Do you have any specifications for this trip?

USER: I prefer for a direct flight.

ASSISTANT: Thanks for providing details, hold on a moment please. I will check the flight service with your specifications.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to inform you, there are no flight services available with your request of direct flight on this route in your requested dates.

USER: Not an issue, I will find an other way. Thank you very much for your information.

ASSISTANT: That's fine. Thank you for utilising our service, have a great day.

USER: Most welcome.