You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I abet you today?

USER: I am Donald Miller. I want to book a ticket to meet my friends, can you please help me that?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Can you help me with your source and destination codes?

USER: My airport codes are from IAH to PHL.

ASSISTANT: Kindly assign your trip dates?

USER: I would like to leave between 04/01 and 04/03.

ASSISTANT: Do you have any price limit?

USER: Yes, I can afford up to 500.

ASSISTANT: Thanks for sharing your details, we found a connecting flight with flight number 1012  and fare 100.

USER: Ok, please book this ticket.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: Thank you.