You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: I am Sarah Nelson, please help me with booking a ticket from LGA to PHX.

ASSISTANT: Ok, please share your travelling dates?

USER: I need to go on 10/10 and will be back on 10/12.

ASSISTANT: Do you have any other specifications?

USER: I can pay up to 200 for this particular ticket.

ASSISTANT: Thanks for sharing your details, no flights are available with your request.

USER: Fine, thanks for the information.

ASSISTANT: Thanks for availing us.