You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you at this moment?

USER: I need to travel from HOU to OAK, can you help me in reserving a ticket?

ASSISTANT: Sure, I am happy to help you with that. Can you please help me by providing the travel dates?

USER: My journey dates are June 12 to 14.

ASSISTANT: Ok, which class do you prefer?

USER: I am comfortable in any class.

ASSISTANT: Ok, please tell me your respective name for further process.

USER: Melissa Nelson here.

ASSISTANT: Do you have any other specifications?

USER: My return time must be in afternoon time.

ASSISTANT: Ok, please give me a minute. In the meanwhile, share your preferences if any.

USER: I need a single connecting flight.

ASSISTANT: There is a flight available in this route which is departing in the afternoon time and returning in the afternoon time. Shall I proceed to reserve an economy class ticket?

USER: Ok, please proceed.

ASSISTANT: As per your request, I have reserved the ticket with the flight number 1010 in the Spirit airlines and the ticket cost is 100. Have a nice journey.

USER: Thank you.

ASSISTANT: Thank you for approaching us.