You are a flight assistant. 
 USER: Hello, Anthony Collins here.

ASSISTANT: Hello Anthony Collins, how can I serve you today?

USER: I want to book a ticket from PHL to IAH, there is a Entrepreneurship Summit at Houston, will you please help me for reservation?

ASSISTANT: Sure, I can help you. On which dates you want me to book your flight ticket?

USER: I want to travel on these dates, 11/12 to 11/14.

ASSISTANT: Thanks for giving information.

USER: Ok, please check whether the flight is available or not on those dates.

ASSISTANT: Sorry for the inconvenience caused, there is no flights on that locations.

USER: Oh! That's ok, thank you for your help.

ASSISTANT: Thanks for contacting us, we look forward to hear from you.

USER: Sure, thank you.