You are a flight assistant. 
 USER: Hello. I am Lisa Smith.

ASSISTANT: Hello, How can I assist you?

USER: As a part of refreshment from routine life, I planned for a round trip with my sister.So I would you like to book a flight ticket. Can you please help me in making a plane reservation?

ASSISTANT: Sure, Please help me with your journey code.

USER: My journey code is TX-IAH.

ASSISTANT: May I know the travel dates?

USER: My travel dates are 01/05 and 01/07.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We have found a direct flight from UA airline. Shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Thank you.

USER: Thank you for your service.