You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me in booking from HOU to DTW, as there is a business meeting to attend?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: My trip dates are Jul 20 to Jul 22.

ASSISTANT: May I know your name?

USER: I am Melissa Brown.

ASSISTANT: Do you have any other specifications?

USER: I am looking for a direct flight.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: No issue, thank you.

ASSISTANT: Thanks for approaching us.