You are a flight assistant. 
 USER: Hello, I am Nicole Campbell.

ASSISTANT: Hello, how can I guide you today?

USER: I need to book a flight ticket from IAH to PHL, Can you please help me for booking?

ASSISTANT: Sure, please share your travelling dates?

USER: I would like to travel on 10/18 to 10/20.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: There are no flights found on your requested dates.

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

ASSISTANT: Thank you for choosing us.