You are a flight assistant. 
 USER: Hello, I am Stephanie Carter.

ASSISTANT: Hello, how can I aid you today?

USER: I am planning to visit NASA space center in Houston, can you please help me to book a flight with single connection?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey dates are from 09/09 to 09/11.

ASSISTANT: Ok, please share your journey airport codes.

USER: I want to fly from DEN - HOU.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry to say that, there is a direct flight which does not suits to your schedule.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for reaching us.