You are a flight assistant. 
 USER: Hi, I am Samantha Perez.

ASSISTANT: Hello Samantha Perez. How may I assist you at this moment?

USER: I am planning to book a flight from HOU to reach Charlotte, so please help me in booking a flight.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please provide your departure and return dates of travelling?

USER: My depart is in morning time on Aug 26th and return is on 28th Aug.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any specific timings in departure and arrival?

USER: I have already mentioned.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your planned dates of travelling.

USER: No worries, thank you.

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