You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I serve you the best today?

USER: My name is Amy Hall, I want to book a flight ticket in economy class. Can you help me with booking?

ASSISTANT: Sure, from where you want to start and end your journey?

USER: I will fly from OAK and my destination is IAH.

ASSISTANT: When would you like to depart and arrive?

USER: I like to travel on Aug 18 and return on Aug 20.

ASSISTANT: Do you need any way station in between your journey?

USER: Yes, I need a halt.

ASSISTANT: We are sorry to inform you that there is no flight found with your matching information.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for approaching us.