You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I need to travel from LGA to HOU, can you help me?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My trip dates are 06/09 and 06/11.

ASSISTANT: Do you have any preferences about flight connections?

USER: I need a connecting flight in economy class.

ASSISTANT: Do you have any preferences about class?

USER: As I said, I need economy class.

ASSISTANT: Please mention your name.

USER: My name is Nancy Moore.

ASSISTANT: There is no flights found under your preferable details.

USER: That's ok. Thank you.

ASSISTANT: Welcome, have a great day.