You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I best support you?

USER: Houston underground tunnel tour is to be starting on 04/01.Would you aid me in booking a ticket to attend this event?

ASSISTANT: Sure, please provide your airport codes?

USER: Airport codes are from Oakland, OAK to Houston, IAH.

ASSISTANT: When do you planned to return?

USER: Return date is on 04/03.

ASSISTANT: We found a flight with a fare of 100 having a lay by.

USER: Ok.

ASSISTANT: Shall I confirm booking with Spirit airline?

USER: Confirm my booking.

ASSISTANT: Your ticket has been confirmed with 1014 airline.

USER: Thank you for your support.

ASSISTANT: Thank you for availing with us. Have a great day.

USER: Rachel Davis is my name.

ASSISTANT: Wish you a happy journey.