You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I want to book a ticket from PHL to HOU, can you help me?

ASSISTANT: Sure, I can help you with that. Can you please mention your travel dates for booking flight ticket?

USER: My travel dates are 01/30 and 02/01.

ASSISTANT: May I know your name for further process?

USER: Myself Rachel Harris.

ASSISTANT: Ok, please wait a moment, I will check flight availability.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, no flights available as per your requested dates.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us, have a nice day.