You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: Can you please reserve me a flight ticket from HOU to PHL?

ASSISTANT: Sure, May I know the travelling dates?

USER: My trip dates are 08/26 - 08/28.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Elizabeth Lewis here.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: No issues, thank you.

ASSISTANT: Thank you for opting us.