You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Virginia Collins, I planned to visit my friend's house.Can you please book a ticket?

ASSISTANT: Could you please tell me your airport codes?

USER: Sure, my travelling codes are from TX-IAH to TX-HOU.

ASSISTANT: Could you please tell me your travelling dates?

USER: My travelling dates are from 05/01 to 05/03.

ASSISTANT: Sorry, no flights are available at your requested dates.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us. Have a nice day.