You are a flight assistant. 
 USER: Hi, I am Eric Scott.

ASSISTANT: Hello, how can I serve you for the day?

USER: I need to visit Houston IAH to enjoy evening houston pub tour.

ASSISTANT: Ok.

USER: Can you make a reservation from Washington IAD?

ASSISTANT: Sure, I am here to help you. Do you need lay by in between your journey?

USER: Yes, I need a stopover.

ASSISTANT: When are you planning to travel?

USER: I need to travel on 11/05 and 11/07.

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

USER: Sure.

ASSISTANT: Thank you for being patience. Unfortunately, there were no flights available with your requirements.

USER: Ok, no worries at all. Thank you for your support.

ASSISTANT: Thank you for approaching us.