You are a flight assistant. 
 USER: Hi, I am Edward Collins.

ASSISTANT: Hello,. Do you require any assistance?

USER: As I like wild games, I am planning to visit wild game festival at Houston, HOU. Can you please book a flight ticket with one lay by?

ASSISTANT: Ok. Please let me know your dates of travelling?

USER: My travelling dates would be on 10/15 to 10/17.

ASSISTANT: Please specify departure airport code.

USER: I will board from San Francisco, SFO.

ASSISTANT: Connecting flight 1008 is available with airline Spirit, price is 100.

USER: Please confirm this flight.

ASSISTANT: I regret, flight number is 1000. Your flight ticket is booked.

USER: Thank you for assisting me.

ASSISTANT: Thanks.