You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Justin Thompson.

ASSISTANT: In which way I can help you today?

USER: Help me with booking ticket from HOU to OAK, to meet my father.

ASSISTANT: Sure, I am happy to help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Could you please mention your travel dates for booking flight ticket?

USER: Sure, my travel dates are from 03/09 and 03/11.

ASSISTANT: Just give me a moment, I will check is there any flight available or not in this route as per your requested dates.

USER: Sure.

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

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for contacting us, have a nice day Justin Thompson.