You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: Myself Richard Adams. I want to book a flight ticket from HOU to OAK. Can you please help me in that?

ASSISTANT: Sure, I will aid you with that. Can you please mention your preferable travel dates?

USER: My trip dates are July 24 to July 26.

ASSISTANT: Do you have any preferences regarding timings of your journey?

USER: My return should be in the morning.

ASSISTANT: Are you ok with connecting flight or you need a direct flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any another specifications?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, no problem. 'Thank you.

ASSISTANT: Thank you for reaching us.