You are a flight assistant. 
 USER: Hi. I am Catherine Brown.

ASSISTANT: Hello, how can I be your helping hand?

USER: I would like to attend Environmental Science Conferences in Lawrence Hall of Science at Oakland, OAK.

ASSISTANT: Ok.

USER: Can you help me in my reservation?

ASSISTANT: Sure, I am perky to help you. May I know the airport code that you wish to board from?

USER: My source airport code is Houston, TX - IAH.

ASSISTANT: Help me with your dates of trip.

USER: I will start my journey on 05/31. I will return on 06/02.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time.

USER: Ok.

ASSISTANT: I am glad to inform you that, there is a flight available with Frontier airline, flight number 1008 with fare 200 and a lay by.

USER: Proceed with my booking.

ASSISTANT: Your reservation has been done.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.