You are a flight assistant. 
 USER: Hello. I am Larry Roberts.

ASSISTANT: Hello, how may I help you?

USER: Can you please book me a ticket with the fare of 200?

ASSISTANT: Sure, please tell me your trip dates.

USER: I would like to leave between 08/10 and 08/12.

ASSISTANT: Ok, please tell me your airport codes.

USER: My airport codes are from DEN to IAH.

ASSISTANT: The AA airline with flight number 1018 is available having price as 100 and connection as 1.

USER: Ok, please book this ticket.

ASSISTANT: Ok, your reservation is done.

USER: Thank you.

ASSISTANT: Thank you.