You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Ruth Scott from Charlotte. I need to book a flight ticket from CLT to IAH. Can you please help me with booking.

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travelling  dates are from 07/17 to 07/19.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to say, no flights were available on your route.

USER: No problem. Anyway, thank you for the information.

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