You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Frank Collins. I want to visit Dallas World Aquarium at Dallas, DFW. Can you help me in booking from San Francisco, SFO?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please share me your journey dates.

USER: My journey dates are from 07/10 to 07/12.

ASSISTANT: Do you need a halt within your journey?

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

ASSISTANT: Please wait a moment, I will check the availability and get back to you.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no flight available on your dates.

USER: Ok, Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.