You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Amy Edwards.

ASSISTANT: Amy, how may I help you?

USER: I am looking for a flight from HOU to OAK, to visit the Oakland Museum of California. Can you help me with booking?

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

USER: Sure, my trip dates should be 02/19 and 02/21.

ASSISTANT: Please hold on for a while.

USER: Ok.

ASSISTANT: Sorry, no flight is available on your route.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for reaching us.