You are a flight assistant. 
 USER: Hi,. I am Lisa Smith.

ASSISTANT: Hello, how may I aid you?

USER: On 01/05 to 01/07, I have several meetings with the clients at Houston. So can you book me a flight ticket from Seattle?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please share your airport codes?

USER: My boarding is from SEA and landing is at HOU.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Usually, I prefer a halt.

ASSISTANT: Ok, please wait a moment.

USER:  Sure, take your time.

ASSISTANT: Sorry, there were no flights found on your specified connection.

USER: That's ok, thanks for the given information.

ASSISTANT: Thank you for opting us.