You are a flight assistant. 
 USER: Hi, Lisa Harris here.

ASSISTANT: Hello Lisa, how may I assist you?

USER:  I would like to visit museum at JFK, could you please help me with booking a flight ticket from HOU?

ASSISTANT: Sure, could you please mention your trip dates?

USER: Sure, I want to go on 06/11 to return on 06/13.

ASSISTANT: Sorry Harris, there is no flight is available.

USER: It's alright.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your information.