You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Jennifer Evans. I would like to book a ticket to Houston, to meet my childhood friends.

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are as follows Aug 15 and Aug 17.

ASSISTANT: Ok, let me know your source and destination airport codes?

USER: My genesis and terminus airport codes are SFO and IAH.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I flexible either way, if the cost don't exceed more than 1000.

ASSISTANT: Do you have any particular time for departing and returning?

USER: No, I don't have any. Thank you.

ASSISTANT: We found a direct flight from Frontier airline and the fare is 200 with an economy class.Shall I proceed?

USER: Sure, please proceed with the reservation.

ASSISTANT: Your ticket is booked with 1015 flight number.

USER: Thank you for assisting me.

ASSISTANT: Thank you for reaching us.