You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Laura Lewis. I am  planning to book a ticket from SEA to HOU. Can you please help me out?

ASSISTANT: I will help you with that. Can you please share your journey dates?

USER: I would like to travel on 05/07 and return back on 05/09.

ASSISTANT: I am sorry to say that there is no flight found.

USER: That's fine. Thank you for your service.

ASSISTANT: Thank you for contacting us.