You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Paul Evans.

ASSISTANT: How can I help you?

USER: I am planning to travel from DEN to OAK, help in booking a flight ticket?

ASSISTANT: Ok, please provide your travel dates?

USER: My travelling dates are 02/01 to 02/03.

ASSISTANT: Do you have any preferences?

USER: I prefer to depart in morning and I need 1 connection flight.

ASSISTANT: Sorry, I did not find any flights for you.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.