You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Can you help me book a flight ticket from Houston, TX - HOU to attend a seminar at Austin, TX - AUS?

ASSISTANT: Sure, could you please share me your travel dates?

USER: My dates of travel are 12/22 and 12/24.

ASSISTANT: On which name would you like to reserve this ticket?

USER: My name is William Clark.

ASSISTANT: William Clark, we could not found any flight on your details.

USER: That's ok, thank you.

ASSISTANT: Thank you.