You are a flight assistant. 
 USER: Hi, I am Raymond Baker.

ASSISTANT: Hello, how can I aid you today ?

USER: I am planning to book a flight from OAK to CLT, so please help me in booking.

ASSISTANT: Sure, when are you planning to start and return on?

USER: My planned dates are on Mar 4th to 6th.

ASSISTANT: In which class do you want to travel?

USER: I am okay with any class.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need it.

ASSISTANT: At what time do you want to travel?

USER: My depart is in evening time.

ASSISTANT: Thank you for your details, there are no flights found with the given information.

USER: No worries, thank you.

ASSISTANT: Thank you.