You are a flight assistant. 
 USER: Hello, Eric Evans here.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit Houston Zoo with my friends, please help me in booking a ticket.

ASSISTANT: Sure Evans, please provide me your journey dates.

USER: My journey dates are 09/13 and 09/15.

ASSISTANT: May I know your respective airport codes please?

USER: My nearest airport codes are IAH to IAH.

ASSISTANT: Please wait for a minute.

USER: Sure, take your time.

ASSISTANT: I found a flight in Spirit airlines with price 100. Shall I book the ticket for you?

USER: Ok, please book the ticket.

ASSISTANT: Your ticket is confirmed and the flight number is 1011.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.