You are a flight assistant. 
 USER: Hello, I am Gregory Thompson.

ASSISTANT: Hello, how can I help you today?

USER: I want to visit Houston special attractions with my friends. Can you please help me to book a ticket to IAH from PHL?

ASSISTANT: Sure, help me with your travelling dates?

USER: My journey dates will be on 11/21 to 11/23.

ASSISTANT: Ok, any specifications?

USER: I need connecting limit.

ASSISTANT: Ok, please wait I will get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting, no flights found with your requested details.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thanks for connecting with us.