You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I need to buy a plane ticket from LGA to IAH. Please help me in that.

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

USER: My travel dates are from July, 12 to July, 14.

ASSISTANT: May I know your name please?

USER: Lisa Rodriguez.

ASSISTANT: Do you have any connection limit?

USER: I prefer a single connecting flight.

ASSISTANT: Is there any specifications?

USER: No.

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

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us.