You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you help me in booking my flight ticket from LGA to HOU?

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

USER: My trip dates will be Apr 20th to Apr 22nd.

ASSISTANT: Do you have any preferences about flight connections?

USER: I prefer a connecting flight.

ASSISTANT: Please mention your name.

USER: I am Michelle Walker.

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

USER: Its ok, thank you.

ASSISTANT: Welcome, have a great day.