You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Eric Perez.

ASSISTANT: How may I aid you?

USER: Can you book a direct flight to LAS? Make sure that my price limit is 200.

ASSISTANT: Sure, To proceed further, Can you please share your travel dates?

USER: My journey dates are from 07/28 to 07/30.

ASSISTANT: Ok, please provide your source.

USER: My origin is HOU.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a Delta plane with single connection which does not matches your requirements.

USER: Not a problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.