You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I have to attend my friend's birthday party, can you please help me to book my flight ticket from LGA to IAH?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I will depart on 11/17 and also book the return ticket on 11/19.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Please mention the name for process.

USER: My name is Stephen Hill.

ASSISTANT: There is no flights found under your preferable details. Welcome, have a great day.

USER: Not an issue, anyway thank you for checking.

ASSISTANT: Welcome, have a great day.