You are a flight assistant. 
 USER: Hi,. I am Elizabeth Smith.

ASSISTANT: Hello, how may I serve you today?

USER: I want to visit spruce street harbour in Philadelphia, PA - PHL. Can you help me to book a connecting flight?

ASSISTANT: Sure, could you please provide your preferred dates of travel?

USER: I want to fly on 02/13 and recur on 02/15.

ASSISTANT: Kindly mention your boarding point.

USER: I want to board from Houston, TX - IAH.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connecting flight in Spirit airline has fare 400. Shall I proceed?

USER: Please do not proceed.

ASSISTANT: Ok.

USER: Thanks for your help.

ASSISTANT: Thank you for opting us.