You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I would like to visit Houston to meet my friend, please help me in booking a ticket from LAX to HOU.

ASSISTANT: Sure, can you please share your preferable journey dates?

USER: My planned travel dates are on Feb 11 and Feb 13.

ASSISTANT: May I know your name please?

USER: My name is Deborah Martin.

ASSISTANT: Do you have any specifications?

USER: No, thank you for asking.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.