You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: My name is Benjamin Miller, I want to book a flight to visit my uncle's house with my family. Can you book a connecting flight for me?

ASSISTANT: Sure, Please help me with your travel dates.

USER: I will fly on 05/07 and return on 05/09.

ASSISTANT: May I know the journey codes?

USER: My source airport is CO-DEN and my destination is NY-LGA.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Thank you for the information.

ASSISTANT: Thank you for opting us.