You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from my side?

USER: I am Jessica Miller. I am planning to visit Downtown Aquarium at Houston, could you please help me with booking a flight ticket from OAK to HOU?

ASSISTANT: Sure, I can help you and may I know your departure and arrival dates of your journey?

USER: I would like to depart on Dec 10th and return on Dec 12th.

ASSISTANT: Please give me a moment to check for the flight and I will get back to you.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, as per your dates there is no flight found on your journey dates.

USER: Ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: You are most welcome and thank you for reaching us.