You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Joshua Smith here. I want to travel from IAH to LGA. Can you please book a flight for me?

ASSISTANT: Sure, I will help you with that, may I know your preferable your dates?

USER: Thank you. I need to fly on Aug 5 and intend to return on Aug 7.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a halt in between journey.

ASSISTANT: Please wait for a while.

USER: Sure.

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

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.