You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: I am looking to book a flight ticket to meet my friend in Houston, can you help me for booking a flight ticket from LGA to HOU?

ASSISTANT: Sure, I am perky to help you with that. May I know your travel dates, please?

USER: My travelling dates are July 21 and July 23.

ASSISTANT: Let me know your connection limit, please.

USER: I need a single connecting flight.

ASSISTANT: May I know your class preference?

USER: I need a economy class in my journey.

ASSISTANT: Do you have any more specifications, which are to be met?

USER: No.

ASSISTANT: Please, provide me your name to proceed further.

USER: My name is Sandra Davis.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry for the inconvenience, there are no flights running on your desired routes.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for opting us, have a good day.