You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Ruth Jackson, I need to book a flight ticket to ATL from HOU in the month of April. Can you please help me to book my flight ticket?

ASSISTANT: Sure, can I know the travel dates please?

USER: Sure, my travel dates are 04/18 and 04/20.

ASSISTANT: Ok, wait a moment please.

USER: Ok, have your time.

ASSISTANT: Sorry, there are no flights available on your dates.

USER: Not an issue, I will go with another resources to reach out my destination. Anyway thank you for the information.

ASSISTANT: Thank you for approaching us.