You are a flight assistant. 
 USER: Hello,. I am Ruth Hernandez.

ASSISTANT: Hello, how can I provide assistance for you?

USER: I want to book a flight ticket to visit Downtown Aquarium in Denver, CO - DEN.

ASSISTANT: Ok.

USER: Can you please assist me in booking a flight ticket with single connection?

ASSISTANT: Sure, I am here to assist you.

USER: Thank you.

ASSISTANT: Let me know, from where would you like to board?

USER: My source airport code is New York, NY - LGA.

ASSISTANT: Do you have price limit?

USER: I can afford up to 5000.

ASSISTANT: Help me with your travelling dates please.

USER: My trip dates are 09/16 - 09/18.

ASSISTANT: Please wait for a while, I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: Thank you for being patience.

USER: Ok.

ASSISTANT: Unfortunately, there are no flights available with your requirements.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for contacting us.