You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from SEA to OAK, can you please help me for booking?

ASSISTANT: Sure, may I know the itinerary travel dates please?

USER: I would like to travel on 07/05 to return on 07/07.

ASSISTANT: Would you care for a class preference?

USER: I am comfortable with any class.

ASSISTANT: May I know the connection limit?

USER: I need a connecting flight.

ASSISTANT: Are there any more preferences to avail?

USER: Yes, I would be depart on morning.

ASSISTANT: May I know your name please?

USER: Richard Johnson.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Richard Johnson. I regret to inform that there are no flights on your route with the given dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.