You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Please book me a flight ticket from LGA to HOU to meet my family.

ASSISTANT: Let me know your travel dates too.

USER: I have planned to travel on Apr 21st and return on Apr 23rd.

ASSISTANT: Please let me know if you have any class preference.

USER: I am ok with any class.

ASSISTANT:  Is there any other requirements for this trip to met with, so that I can find a suitable flight for your journey?

USER: No, thanks.

ASSISTANT:  Can you please let me know your name for further proceeding?

USER: Gregory Mitchell.

ASSISTANT: We have a connecting flight-1008 in economy class, is it fine for you?

USER: Ok, please book this ticket.

ASSISTANT: Ok, booking is done on Spirit airlines.

USER: Thank you so much.

ASSISTANT: Welcome Gregory Mitchell.