You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I provide assistance to you?

USER: I need a connected flight to reach my destination OAK to attend for an Innovation festival. Can you please help me for booking from my hometown?

ASSISTANT: Sure, I am gleeful to assist you. When are you planning to go and return back from your journey?

USER: Thanks for accepting my request, I would like to depart on April 16 and return on 18 April.

ASSISTANT: I need your selected airport code, that you wish to board from?

USER: Sure, I am boarding from HOU.

ASSISTANT: May I know your good name please?

USER: My name is Alexander Baker.

ASSISTANT: Is there any other specifications regarding your journey?

USER: Make sure that, I need a flight which return at evening.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: Ok, I will choose another alternative to go. Thank you.

ASSISTANT: Thanks for approaching us, wish you a nice day.