You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Pamela Phillips.

ASSISTANT: What help that I can assist you from our agency?

USER: I want to book a flight ticket from CA-LAX to TX-IAH. Can you help me?

ASSISTANT: Sure, I can help you. May I know your airborne and recur travel dates for better searching?

USER: 06/22 and 06/24 are my travelling dates.

ASSISTANT: Thank you for providing your information, there are no flights for your journey on the dates that you have provided for booking purpose.

USER: NO issue. Thank you.

ASSISTANT: It's my pleasure and have a nice day.