You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Margaret Lopez.

ASSISTANT: How can I assist you?

USER: I would like to fly from HOU, would you please aid me in booking a flight ticket to DEN?

ASSISTANT: Sure, I am here to assist you. Could you please let me know your planned journey dates?

USER: My journey dates are July 18th and July 20th.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Thank you for sharing the details. There were no flights available that matches your requirements.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for approaching us.