You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you please book a flight ticket to Houston?

ASSISTANT: Sure, can I have your name please?

USER: I am Stephanie Carter.

ASSISTANT: Ok, let me know your airport codes?

USER: To attend the niece marriage I need to go from Chicago, ORD to Houston, HOU.

ASSISTANT: Ok, help me with your travelling dates?

USER: Dates are 09/09 to 09/11.

ASSISTANT: Ok, any other requirements to met?

USER: I need a connecting flight. Price can be 500.

ASSISTANT: Ok, no flights found with your requested details.

USER: Ok. Thank you.

ASSISTANT: Thank you for opting us.