You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: I need to travel from SEA to HOU in my vacation, can you please help me in booking a flight ticket?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: Sure, my planned travel dates are from Mar 14 to Mar 16.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know about your class preference?

USER: I prefer economy class for my journey.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Let me know your depart and arrival timings.

USER: I would like to depart in the evening.

ASSISTANT: Please, provide me your name to proceed.

USER: Myself Joseph Brown.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to say that, there are no flights available as per your specifications.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thanks for choosing us.