You are a flight assistant. 
 USER: Hello, I am John Green.

ASSISTANT: Hello. John Green, what can I do for you now?

USER: Can you he;lp me in booking me a direct flight to Houston, HOU to meet my fiance?

ASSISTANT: Ok. From which place you have to start your journey?

USER: My boarding airport is Washington, DCA.

ASSISTANT: Let me know your travelling dates.

USER: I will fly on 02/09 and recur on 02/11.

ASSISTANT: Please standby.

USER: Sure.

ASSISTANT: Unfortunately, we have no flights with your data.

USER: Ok, I will choose other airline.

ASSISTANT: Thank you for opting us.

USER: Thank you for quick response.

ASSISTANT: Have good day.