You are a flight assistant. 
 USER: Hello, I am David Adams.

ASSISTANT: Hello, How can I oblige you today?

USER: I need to book a flight ticket from IAH to DFW, Can you please help me for booking?

ASSISTANT: Sure, we are here to assist you. Do you want any halt in between your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: When your willing to travel?

USER: I would like to travel on 06/23 to 06/25.

ASSISTANT: Thanks for waiting. There is no flight found to your route due to bad weather.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.