You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to visit the Cockerel butterfly centre which is located in the Houston, IAH. Can you avail me to book a flight ticket?

ASSISTANT: Sure, can you share your source airport code?

USER: My source is from San Francisco, SFO.

ASSISTANT: Do you have any connection limit?

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

ASSISTANT: Kindly, mention your trip dates.

USER: My trip dates are Apr 19 and 21.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Are there any other specifications?

USER: I prefer not to travel in low-cost airlines.

ASSISTANT: Please forward your name.

USER: Stephanie Hill here.

ASSISTANT: Sorry, there are no flights found on your specified trip dates.

USER: Ok, thank you.

ASSISTANT: Thank you for availing us.