You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Laura Walker.

ASSISTANT: How may I assist you? Nice to meet you Laura.

USER: Can you please reserve me a flight ticket from Houston, TX - HOU to Los Angeles, CA - LAX?

ASSISTANT: Yes, please tell me your travel dates?

USER: My trip dates are May 29 - May 31.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for your time.

USER: My pleasure.

ASSISTANT: But I am sorry to say that presently there are no flights available with us.

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you.