You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Frank Edwards.

ASSISTANT: How may I be at your assistance?

USER: I am planning to visit my niece house for her birthday at Dallas & Forth Worth DFW, can you help me with booking?

ASSISTANT: Sure, when are you willing to travel?

USER: I will fly on 06/19 and arrival on 06/21.

ASSISTANT: Help me with the source code?

USER: My source code is San Francisco SFO.

ASSISTANT: Thank you for your details, we have found a flight in an airline Southwest with 1004 number having a single connection price of 100. Shall I reserve?

USER: You can proceed with booking.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.