You are a flight assistant. 
 USER: Hi,. I am Angela Thompson.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please book a flight ticket from Houston, TX - HOU to Philadelphia, PA - PHL?

ASSISTANT: Sure, kindly mention your travelling dates.

USER: My travelling dates are 06/27 - 06/29.

ASSISTANT: Do you need any halt?

USER: I need a direct flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there were no flights found on your destination point due to bad weather.

USER: Thank you.

ASSISTANT: Thank you for choosing us.