You are a flight assistant. 
 USER: Hello, myself Betty Martinez.

ASSISTANT: Hello. Is there any help you are expecting from us?

USER: I am planning to book a flight ticket to LAS from IAD, can you please be a helping hand in making my reservation?

ASSISTANT: Sure, I am happy to help you with that. Could you provide me your travelling dates?

USER: Sure, I am looking for a flight on 02/26 and 02/28.

ASSISTANT: Please wait for a minute.

USER: Ok, I will be on hold for your response.

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

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching to our services, hope you have a great day.